Today i do my sporI worked out (iI worked my abs and legs duringfor thirty minutes) and iI watched the F1 qualifications and it is lLando nNorris who win themon.

yea

Also, i have work my eI learnt English with difféerents applications like mMemrise or elsa speak and iI would just speak English outloud. I also saw an episode of sStranger tThings.

dont use memrise, use anki pls

Today i do my sportI did my exercise (iI worked my abs and legs duringfor thirty minutes) and iI watched the F1 qualifications and it iwas lLando nNorris who wion them.

"during" means that it happens at some point in that time window. If you're describing the duration that something takes, it's better to use.

Since this is described something that's already happened, it should be past tense.

Also, i have workI worked on my eEnglish with difféerents applications like memrise or elsa speak, and i sawI watched an episode of stranger things.

1. Names of languages are capitalised
2. "watched" vs "saw" - saw is more passive, watched is more internal. This means watched is better when you choose to watch a TV show
3.

"To work on X" -> To spend some time to improve X
"To work X" -> This is kind of a tricky verb with a number of meanings, but it doesn't fit here. Some cases it might be used is "to work a machine" = "to operate a machine", or "to work the client" = "to negotiate with the client".

My dDay

Words in a title should be capitalized unless they are "minor words" such as by, of, in, etc. Look into title case rules if you'd like to learn more.

Today i do my sport, I exercised (iI worked my abs and legs duringfor thirty minutes) and iI watched the F1 qualifications and it is lLando nNorris who win them.

Comma after "Today" because it is an introductory word, tells the time or event this took place.

The word "I" is always capitalized

"Do my sport" isn't grammatically correct, the proper way to word this would be "played my sport." However, in English, we wouldn't refer to working your muscles as a sport instead we call it "working out" or "exercising."

I changed "watch" to "watched." to conjugate the verb into the appropriate tense. Putting -ed at the end of a word turns it into the past tense which clarifies that you're not watching F1 qualifications now, but you did earlier in the day. This is also why I changed "work" to "worked" and corrected with "exercised" rather than "exercising". Look up verb tenses in English to learn more.

Lando Norris is someone's name and names are always capitalized. Also, if "F1 qualifications" is the official name of the event then the Q in qualifications should be capitalized too.

Also, iI have to work on my eEnglish with difféerents applications like mMemrise or elsa sELSA Speak, and iI saw an episode of sStranger tThings.

I added the word "to" because you are talking about performing an action and "to" is needed to connect the noun in the sentence "I [have]" with that action "work [on] my English."

I added a comma before "and I saw an episode of Stranger Things." Because it is an independent clause meaning it is not related to what you talked about earlier in the sentence (your English homework). If you wanted to, you could make this its own separate sentence by changing the comma into a period and deleting the word "and."

The following I corrected to meet the rules of proper nouns:

English is the name of the language so it should be capitalized

Memrise is the name of the app so it should be capitalized.

Stranger Things should be capitalized because it is the name of a show.

In some cases, instead of just capitalizing the first letter of its name you would write "elsa speak" exactly how the company writes it which is as "ELSA Speak"

Today i do my sport (i workI worked out (I focused on my abs and legs duringfor thirty minutes) and i watched the F1 qualifications and i. It is lLando nNorris who wion them.

Also, i have workI practised my eEnglish with difféerents applications like memrise orand elsa speak; and i sawwatched an episode of sStranger tThings.