I spend almost spend in myall my time at home.

But my annual events have decreasedbig ceremonies and events are being scaled back.

"Annual events" は卒業式や入学式などのような行事という意味ですか。そういう意味を表現する一つの言葉は英語であまりありません。

"Decrease" は数などが減ることという意味になります。

My high school graduation ceremony was held inat a smaller scales and my university entrance ceremony was canceled.

I can't go to my university until November, so I use a PCcomputer to take classes.

日本語で「パソコン」をよく言いますが、英語で「PC」の意味はちょっと違います。英語の「PC」は、Windowsだけのパソコンという意味です。

I can’t mseet my friends.

遊ぶために友達に会う意味を表現するために「meet」の代わりに「see」を使うほうがいいです。

In addition, my favorite artist's concerts hasve been postponed.

My mother is a nutritious innist at the hospital.

Her jobs are to advicesing patients and official worperforming administrative tasks.

So, it has decreased,Therefore, she doesn't have as much work and she can come back home early.

She doesn’t go shopping,; instead of, she gets delivery.

"instead of delivery" = 出前の代わりに

"instead, ...." = その代わりに、何かをする

Now, Mmy father and my cousin work in theirat home.

I’m going to go to university atin November.

Also, group activities have stopped, and welcomeorientation events are held by using a PConline.

The Corona virus Covid-19 has affected the economicy of Japan with negative effects and increasing frauds.

In the worldWorldwide, people can’t go abroad and the economicy isn’t good.

I almost spendspend most of my time in my home.

But my annualany events have decreasbeen stopped.

My high school graduation ceremony was held inat a smaller scales and my university entrance ceremony was canceled.

I can't go to my university until November, so I have to use a PC to take class.

In addition, my favorite artist's concert has been postponed.

My mother is a nutritious innist at the hospital.

Her jobs are is to advicse patients and official workperform administrative duties.

So, it has decreasedince she works less,, she can come back home early.

She doesn’t go shopping, instead ofbut rather uses delivery .

Now, Mmy father and my cousin work in theirat home.

I’m going to go to university atin November.

Also, group activities have stopped, and welcome events are held by using a PConline.

The Corona virus Covid-19 has affected the economic of Japanactivity of Japan, causing negative effects and increasingmore frauds.

IEveryone in the world, people can’t go abroad and the economicy isn’t good.

I almost spend all my time in my home.

Sentence requires a direct object with verb phrase.

But my annual events have decreased.

This is correct grammatically, it just sounds very formal.

My high school graduation ceremony was held in, but it was small scales and m. My university entrance ceremony was cancelled as well.

I can't go toattend my university until November, so I use a PC to take classes.

Attend is a more specific verb. When you have a second phrase separated from the first by a comma, you need a new subject. This is the added 'I', and is also the 'you' in my prior sentence.

In addition, my favorite artist's concert has postponed.

Artist is possessive.

My mother is a nutritiousrse in the hospital.

Nutritious is an adjective, not a proper position.

Her jobs are to advicse patients and other official workduties.

So, it has decreased, and she can come back home early.

She doesn’t go shopping, instead ofshe uses delivery.

I’m going to go to university atin November.

The Corona virus Covid-19 has affected the economicy of Japan, leading to many negative effects and increasing frauds.

In the world, people can’t go abroad and the economicy isn’t good.