1) I've celebrated New Year far from home at a rotation this year .¶
2) I've tried to change amy work group in my department this month .¶
3) I've met several people this year .¶
4) I haven't been to Uzbekistan this year .¶
5) I've made a new effective plan for learning English today ,¶
6) I had an interview last weekend .¶
7) Last weekend, I found out a way to save more money last weekend .¶
8) I ate some porridge for breakfast yesterday .¶
9) Some days ago, I helped my parents to prepare our kitchen garden for winter. some days ago ¶
10) I went to the theatre yesterday.

#1: I'm not sure what you mean by rotation. Do you mean you spent it with different people?
Sometimes saying the time of the day at the beginning of the sentence makes it flow better.

1) I've celebrated New Year’s far from home at a rotation this year .¶
2) I've tried to change a work group in my department this month .¶
3) I've met several people this year .¶
4) I haven't been to Uzbekistan this year .¶
5) I've made a new effective plan for learning English today .¶
6) I had an interview last weekend .¶
7) I found out a way to save more money last weekend . ¶
8) I ate some porridge for breakfast yesterday .¶
9) I helped my parents to prepare our kitchen garden for winter some days ago . ¶
10) I went to the theatre yesterday.

Unsure what you mean in #2. Good job!