Today, I'm vVery lLazy Today

Usually, I work all day, from 8 am to 6 pm, but the; however, today work was so boring because the apps are finished and the tester was testing the appbeing tested.

Then,I thought I saw some corrections, but I think it is not truedon't think so now because I canould not see these errors.

I told my leader about them and she said: , "Ok, tell her [that she could provee tester] to check the app on different mobiles phone because she would not prove it in onlyphones and not just check it on one".

Around 4 pm, the tester told me that she could provecheck the app tomorrow because she has no other mobile phonedidn't have another phone with her.

ThenAfter, I do noidn't do anything in of my work,. I wanted to take ingo to my bed and watch videos or chat with people.

Although, I study noHowever, I didn't end up studying anything!

aAnd I feel really bad because I try to practice every day my English every day, but today I am feeling very lazy.

Now, I am practiceing writing by writing this text infor 7 minutes and the time is now over!

Today, I'm very lazy

"I've been very lazy" or "I feel very lazy" are probably more typical native constructions

Then, I saw some corrections but I think it isthey are not true because I can not see these errors.

"These errors" should refer back to previously mentioned errors. It's the first time you're mentioning it, so "the errors" is correct.

I told my leader and she said: Ok, tell her that she could provetest the app on different mobiles phones because she would not provetest it in only one.

I'm not sure what word you're looking for, either test or approve, but definitely not prove. Even fixing that word, I don't know exactly what's going on here.

Around 4 pm, the tester told me that she could provecheck the app tomorrow because she has no other mobile phone.

another possibility

Then, I doid not do anything in my work, I want to takeget in my bed and watch videos or chat.

or maybe you mean "I will not"

Although, I study nothing!

This us of "although" is a little strange; probably you meant "even so" or "and yet"

and I feel really bad because I try to practice every day my English every day but today I amhave been very lazy.

best if the direct object comes right after the verb in this sentence

Now, I've practiced writing this text in 7 minutes and the time is over!