Hate new job help

Hey everyone I would love some advice, so I started a new job in a hotel in accommodation making beds at first I was so excited and couldn’t wait but then reality struck when I realised how hard it was with 40+ rooms a day.. I’ve been struggling to like it or get the hang of it and my supervisor always picks at me but she’s nice to other new girls who started but it always seems to be me she picks on (there’s a lot of favouritism) and she calls me slow that I can’t keep up or I’ve done it wrong again or I’ve forgot etc... All this negativity it’s just making me depressed and not wanting to work there and it seems my other colleagues don’t get on with me either and just find me the “slow new girl” but I need money and just stuck in a predicament.. what would you guys do?