Why wld the us government raise taxes for government use instead of borowing miney ?

Taxation–they legally require their citizens to hand it to them under the threat of coercion.
Borrowing–they request an amount of money and issue bonds to those who give it to them, promising to repay the money with some amount of interest. These bonds can be held by both citizens and foreigners.
Printing–they print money and put it into the government’s account either directly or indirectly.