do good deeds,before it's too late

"When you beg of people, they hate you for it. When you beg of
Allaah He loves you . So Beg of Allah & be blessed more & more ."
Allaah Ta'ala says:

And all of you beg Allaah to forgive you all, O believers, that you
may be successful. [Sûrah An-Nûr : 31]

"If we have done so many bad deeds ,
we guess Allah will never forgive us"

Allah has commanded all the believers to repent, as He says:
"And all of you beg Allah to forgive you all, O believers, that you may be successful." [ 24:31]