Question1
She didn't wanted to go to the party because she was tired
Subject tense error: didn't want
He enjoy's to play football every weekend.
Enjoys is not supposed to be possessive and to play is incorrect verb pattern: enjoys and playing
The manger, along with his assistants, were present at the meeting.
Subject verb agreement: Was instead of were
She prefers tea than coffee when working late at night.
Incorrect comparison word: to instead of than
The goverment has implemented new changes to the law.
Incorrect spelling: government