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文法と内容から直すと良い点を以下にまとめてみました
I think the coronavirus has forced us to change our lifestyles since 2020.
: force A to do
Firstly, we had to refrain from face-to-face communication during the pandemic.
: 複数communications にしないで不可算名詞あつかい
Since we could not meet friends and classmates, many of us felt depressed.
: 元の文にあった e はタイプミス?? 文をカンマで繋ぎ続けるのではなく、接続詞 Since(〜なので)を使います
In addition, many students could not go on school trips, enjoy school festivals, or attend graduation ceremonies.
: 行事に参加する、attend
Most workers could not go to the office and had to work remotely.
: remote-work は副詞的にwork remotely
Secondly, some people lost their jobs and could not make a living, especially those working in the restaurant or hotel industries.
: those working in...とすると「〜で働く人々」にします
For these reasons, the coronavirus had a negative influence on us.
: had us bad influences は文法的に誤りで、have an influence on A(Aに影響を与える)という形です
ありがとうございます!!!