[Question] do most sewing machines use the same needle Sewing Machines Parts and Sales in Los Angeles

i recently got a sewing machine to make small project odds and ends like some wallets and outdoor backpacks with cordura, and it needs a new needle but didnt come with any, what i mean by needle type is do they all have a flat side and round side that you slide into the sewing machine? i was going to buy some but i had no clue what to look for. and sorry for the butchered tittle, i had no clue how to word it right.