I didn't write some journalentries beacause I was sick for around two weeks and after that, I felt bad about myself.

The specific sections you write in a journal are also called 'journal entries'. You could also say "I didn't write in my journal for a while because I was sick..."

I mean, I felt profrustration.

I started to write this journal again.

It's past tense because you've already written the journal (like this one you just posted)

Why was I so lazy and unon productivitye?

I think I had a bad time management and a wrong daily schedule.

Instead of 'wrong' using 'ineffective or inefficient' might be better

I began to watch English YouTubers forto practice my listening skills.

One of the new YouTubers was Dr. Andrew Huberman.

Sometimes I don't understand what he toldsays, because I have a small vocabulary, but I find the same videos in Russian and I can understand all of this what Dr. Andrew Huberman wanted to tellis saying.

In the beginning, I watched a video about morning routines and I started to use thisat schaedule today.

It was an interesting experience.

I didn't do everything what he tell, but mostly I didhe said, but did most of it.

I felt myself better than pastthe past few days.

I want to follow this scghedule for around thirty days and find out how this life style can help me.

I didn't write someany entries in my journal beacause I was sick aroundfor almost two weeks and after that I felt bad about myself.

I mean I felt profrustrationed.

I have started to write this journal again.

Avoiding repetitions is a sign of a advance language speaker

I know I need this as part of my study.

Why was I so lazy and non -productivitye?

I have also begaun to watch English YouTubers for practice my listening skill.

You want to connect your previous sentences with the new sentence. So the flow is better.

One of newthe YouTubers was Dr. Andrew Huberman.

Sometimes I don't understand what he toldsays, because I have a small vocabulary, but I find the same videos in Russian and I can understand all of ithis what Dr. Andrew Huberman wanted to tell.

Avoid repetition

In the beginingOne of the first videos I watched videowas about morning routine and I started to use this schaedule today.

It was an interesting experience.

I didn't do everything what he tell, but mostly I didhe said, but I did most of it.

I felt myself better than pastese days.

I want to follow this scghedule aroundfor thirty days and find out how this life style can help me.

I didhaven't write someten in my journal lately beacause I was sick for around two weeks, and after that I felt bad myself.

I mean I felt prostrationexhausted.

ISo I've started to write thisin my journal again.

I know I need this part ofo include this in my studyies.

Why was I so lazy and non -productivitye?

I think I had a bad time management and wrong daily scheduleskills.

I began to watch English YouTubers forto practice my listening skills.

One of the new YouTubers I started to watch was Dr. Andrew Huberman.

Sometimes I don't understand what he told,says because I have a small vocabulary, but I fiound same videos in Russian and I can understand all of this what Dr. Andrew Huberman wanted to tellsay.

In the beginning, I watched a video about morning routines, and I started to use thise schaedule todayfrom the video.

It was an interesting experience.

I didn't do everything what he tell, but mostly I didhe said, but I did most of it.

I felt myself've been feeling better thane past few days.

I want to follow this scghedule for around thirty days and find out howif this life style can help me.