Today I'm not going to my Uuniversity, I hav because my classes were canceled fordue to a shootout between Pthe police and Ggang members. Today I'm not going to my university because my classes were canceled due to a shootout between the police and gang members.

No need to capitalize university / police / gang

Today, I'm not going to my University, I have my class canceled for a shootout between Police and Gang members. Today, I'm not going to my University, I have my class canceled for a shootout between Police and Gang members.

It is the present continuous tense, so not going is correct.

Today I'm not going to my University, I have as my class has been cancelled for because of a shootout between Pthe police and Ggang members. Today I'm not going to my University as my class has been cancelled because of a shootout between the police and gang members.

The Federal University ofrom Rio de Janeiro is the most renowned federal institution most Renowded in Braszil. The Federal University of Rio de Janeiro is the most renowned federal institution in Brazil.

The Federal University ofrom Rio de Janeiro is the most renowned federal institution most Renowded in Braszil. The Federal University of Rio de Janeiro is the most renowned federal institution in Brazil.

Not from, of because the university is a part of Rio. The word order should be changed. Spelling of Brazil is wrong

The Ffederal University ofrom Rio de Janeiro is the federal institution the most Rrenowdned in Braszil. The federal University of Rio de Janeiro is the institution the most renowned in Brazil.

However, we're hostages to the failed justice and politic theal systems of my country. However, we're hostages to the failed justice and political systems of my country.

However, we're hostages tof failing justice and politic theizing of my country. However, we're hostages of failing justice and politicizing of my country.

Not howver, however. Lots of changes between words.

However we're hostages to failed justice and the politic thes of my country. However we're hostages to failed justice and the politics of my country.

I feel manyso sad for Rio. I feel so sad for Rio.

"Many" is for things that are countable

I feel many sad for Rio. I feel sad for Rio.

Sadness is uncountable, so there should be no many.

I feel many sad forabout Rio. I feel many sad about Rio.

I Llove my Ccity, it's so pretty. I love my city, it's so pretty.

The words love and city shouldn't be capitalized. For emphasis, you would add more words if needed (I really love my incredible city...)

I Llove my City, it's so pretty. I love my City, it's so pretty.

Only the first teller of a sentence or a proper noun should be capitalised.

I Lovlobe my Ccity, it's so pretty. I lobe my city, it's so pretty.

Rio de Janeiro, the City DuDangerous. City Rio de Janeiro, the Dangerous City

Adjectives (dangerous) almost always come before the noun. No need for a period in the title

Rio de Janeiro, the City DuDangerous. City Rio de Janeiro, the Dangerous City

Wrong spelling of dangerous, order should be changed

Rio de Janeiro, the City Dua dangerous. city Rio de Janeiro, a dangerous city

But, on the last time her lately it is very duangerous. But lately it is very dangerous.

But, on the last time her ie was very duangerous. But, the last time here was very dangerous.

On is useless, Not her, here. We are talking about the past so it should be was very dangerous.

But, on the last time here it was very dungerous. But the last time here it was very dungerous.

He is theIt looks terrible for us residents. It looks terrible for us residents.

He and she are almost always reserved for living things that can be gendered. Objects / non-living things use "it"

He is theIt looks terrible for us residents. It looks terrible for us residents.

I don't know what you are trying to say here.

HeIt is the look terrible for us residents. It is terrible for us residents.

The Red coCommand are terrorizing the region for, including my Uuniversity. The Red Command are terrorizing the region, including my university.

The Red command areis terrorizing the region ofor my Uuniversity. The Red command is terrorizing the region of my university.

Wrong spelling of command, Since the command is only one, it should be is, not are

The Red comand are terrorizing the region foraround my Uuniversity. The Red comand are terrorizing the region around my university.

This researcher and anothers were blockeds to went in from going to the labaoratory in UFRJ forby theses criminals, and forom the fail Jed justice fromsystem in Brazil. This researcher and others were blocked from going to the laboratory in UFRJ by theses criminals, and from the failed justice system in Brazil.

This researcher and many others were blockeds to went from going into the labaoratory in UFRJ for theses criminals and for the failure of Justice fromin Brazil. This researcher and many others were blocked from going into the laboratory in UFRJ for these criminals and for the failure of Justice in Brazil.

Many others fits better in this context. Blocked is nonfinite, so it does not change based on whether the subject is singular or plural, so it should be blocked. To went is wrong. Went is not an actual verb, it is the past form of go. And for many other reasons, from going is correct. Wrong spelling of laboratory. These is already plural so the s is useless. Not fail, failure if talking about in abstract form.

This researcher and anothers were blockeds to went in from going to the labaratory in UFRJ for theses criminals and for the fail Justice from Brazil. This researcher and others were blocked from going to the labaratory in UFRJ for theses criminals and for the fail Justice from Brazil.

In the last few days, an reasearcher has discovered the soluction for thea cure for quadriplegia. In the last few days, a researcher has discovered a cure for quadriplegia.

You might add a very short description of this disease since it is relatively obscure

In the last days, an reasearcher discovered the soluction for the quadriplegia. In the last days, a researcher discovered the solution for the quadriplegia.

"Researcher" does not start with a vowel so an will not come, a will come. Not reasercher, it is researcher. Not soluction, solution.

In the last days, an reasearcher discovered the soluction for the quadriplegiac. In the last days, a researcher discovered the solution for quadriplegic.