It's hot as hell, (and) it feels like ibeing on Venus.

In this casual style it's ok to omit this and but in more usual written communication you'd include it

No AC, I turned off the fan because the wind from that is even hotter.

I was dying, feeling dizzy, trynaing to figured out how to survived through this.

Some dialects may abbreviate "trying to" to tryna in casual spoken English, (trying to -> trying ta -> tryin'a -> tryna) but it's basically never written down as such, even in very casual writing (I'm actually surprised my phone's spell check didn't object)

I was trying to take a nap to get through this middayafternoon, but it's so hot that I got sweaty all ofver my body, couldn't sleep at all.

When describing a larger period, afternoon is more natural than midday.

"What if my life 5 years aheadfrom now will still be the same as this day?"

F*ck no, I'm not going to be living a life like this, I have a dream.

I can't givinge up yet.

people that I always look up to, that I get inspired, wasere running through my head.

Imagineding I'm getting mocked, befeeling regret because of my lazy ass in the next 5 years, and my entire life.

I did 10 push-ups, gethen got back to work/ study.

Even though it was tough, I know that if I don''m not willing to change, nothing changed.

"willing to change" describes a state, not an action

I'm not trying to getbe pitied, I'm just trying to note down stories of my life.

I aAin'’t Ever Giving Up (slang) / I'm Never Giving Up

It's hot as hell,; I feel like iI'm on Venus.

No AC, and I turned off the fan because the wind from that made it even hotter.

I was dying, feeling dizzy, trynaand (I'm) trying to figured out how to survived through this.

Include the "I'm" to mean that you are currently/still trying to figure it out.

I was trying to take a nap to get through this mide day, but it' was so hot that I got sweaty all of my body,ver; I couldn't sleep at all.

"This midday" sounds extremely dated, like a cowboy might say in the 1800s.
"All over" implies all over your body

"What can I do?" I asked myself.

Suddenly jumping into quotes kind of needs to be addressed somehow

"What if my 5 years aheadfrom now I'm still bein the same as this dayis situation?"

F*ck no, I'm not going to livinge a life like this, - I have a dream.

Jumping (maybe a bit abruptly) to another thought tends to call for a dash instead of a comma

I can't givinge up yet.

There's are so many things that I want to do.

The videos ofrom David Goggins, Mask Meditator, etc.

pPeople that/who I always look up to, that I get/who inspired, was me, were running through my head.

I imagined I'm getting mocked, by them and being regret because of my lazy ass in the next 5 years, and my entire lifeful/sorry in 5 years, or for the rest of my life, because of my current lazy ass.

I did 10 push-up,s and geot back to work/ studying.

You can say "got back to work" but "got back to study" would sound awkward. "Got back to working" would be fine too

Even though it wa's tough, I know that if I don''m not willing to change, nothing will changed.

It was tough, and it still is, and you are talking about your current resolutions in the face of this fact, so present tense "it's tough"

I'm not trying to get pitiedsympathy, I'm just trying to note down stories ofrom my life.