I am tired today, because I woke up at 7 am three lpast three days.

7 am isn't tiypical for me.

I got to bed at 11 pm or 12 am.

My correction assumed that you were speaking of your general practice. If, instead, you were talking about the previous three nights, it should have been “I went to bed at 11 pm or 12 am.”

I know forthat a man needs 7 hours tof sleep.

It's enough for most men, but for me it isn't.

If I sleep 7 hours I can't be in good conditionfor only 7 hours, I’m not in good shape.

Any one of these three—“for only 7 hours” or “only for 7 hours” or “for 7 hours only”—is acceptable. Using “condition” is not wrong, but “shape” is more common in this case.

I think a gym influences to my condition, too.

Here “condition” is perfect.

I don't training hard, but it influences me, and my diet also influences me.

Did you mean that your diet is a separate influence, or that your gym workout influences your diet?

I need to get to bed earlyier today than 11 pm.

Maybe by 9:30 pm.

There are a number of different options here.

In order to practice my English, I will tell you about athe weather today.

The weather was sunny and without clouds, but windit was a little bit windy.

Instead of “without clouds,” you could have used “cloudless.”

Usually, the weather is sunny in my city.

There are differing opinions on the proper use of commas.

Rain is rarelyIt rarely rained, but if wasit raininged for a few days, then always was inthere were always puddles around my house.

I am tired today, because I woke up at 7 am three last three days.

Waking up at 7 am isn't tipicusual for me.

I got to bed at 11 pm or 12 am.

I know for manpeople need 7 hours tof sleep.

It's supposed to be enough, but for me it isn't.

If I sleep for 7 hours I can'my condition will not be in good condition.

I think agoing to the gym influences to my condition too.

I don't training hard, but it influences my condition, and my diet influences my condition too.

I need getto go to bed early todayier than 11 pm today.

Maybe I should go to bed at 9:30 pm.

In order to practice my English I will tell you about athe weather today.

The weather was sunny without clouds, but windit was a little bit windy.

Rain is rarely, but if was rainingit rains for a few days then always was inthere are always puddles around my house.

I'm tired today, because I woke up at 7 am three last 3 days.

Usually I wake up atround 8 or 9 am.

7 am isn't tiypical for me.

I got to bed at 11 pm or 12 am.

I know for manpeople need 7 hours tof sleep.

It's enough, but for me it isn't. a good amount

If I sleep 7 hours I cawon't be in good condition.

I think athe gym influences to my condition too.

you could use energy instead or condition to insinuate that you're tired

I don't training hard, but it influences and my diet influences.

I need getto go to bed early todayier than 11 pm. today

In order to practice my English I will tell you about athe weather today.

The weather was sunny without clouds, but wind was little bitthere was some wind.

Rain is rarely, but if it was raining for a few days then always was inthere is always puddles around my house.

I'm tired today, because I woke up at 7 am three lpast three days.

7 am isn't tiypical for me.

I got to bed at 11 pm or 12 am.

"go to bed" or "go to sleep" both work here as fixed phrases

I know forthat maen need 7 hours tof sleep on average.

It seems you're talking about a statistic here, so adding "on average" should make that clearer

It's enough for most, but for me it isn't.

Since you're explaining two cases, one where it's enough and one where it's not, it's good to specify the difference within that sentence

If I sleep 7 hours, I can't be in good condition.

I think agoing to the gym influences to my condition too.

I don't training hard, but it influences and my diet influencesstill has an impact, and my diet also has an impact.

"influences" isn't wrong here, but it sounds a little strange without an object

I need get bed early todayto go to bed today earlier than 11 pm.

In order to practice my English I will tell you about athe weather today.

The weather was sunny without clouds, but the wind was a little bit strong.

"a little bit" quantifies a description, so you still need an adjective, like "strong" or "cold"

Rain is rarely, but if was rainingit rains for a few days then always was inthere are always puddles around my house.

The "if...then" structure presents a case and then explains the outcome. Both phrases should be written in the way complete sentences would be, aside from the "if" and "then"
("it rains for a few days" could be a complete sentence on its own)