I dont have time to talk to her about it
I suggest that you make the time. Saying that you don't have time to talk to her will only increase her belief that you are not doing your best.
If I had the ability to go back in time and witness the fight for declaration of independence.
This is a sentence fragment.
To begin with, this country I love was now always free.
Read this sentence carefully. Do you see the word that makes it mean something other than you intended? Careless proofreading always makes teachers think you are not doing your best.
In the end, I learned many valuable lesson during my trip back in time. These two lessons will definitely have a positive effect in my life.
Many lessons? Or two lessons? Your sentences need to agree with each other.