Toddler bed crisis! HELP

Does anybody have any tips/suggestions for my toddler? She used to go into her crib with no problem. I’d give her a bottle, & she’d lay there awake drinking it, & then pass right out & sleep 12 hours straight until morning. No fuss. We switched her to her toddler bed recently (she began climbing out of her crib so, no, we cannot go back to it) & now she screams immediately when it’s time for bed, & wakes up around 2AM, & keeps me up for 2-4 hours a night, constantly getting out of her bed to open the door & scream at the baby gate. She never hated bed time. But I’m at wits end getting 2-3 hours of sleep & being up every night from 2am to 5am, fighting to be persistent with a toddler & repeatedly putting her back in her bed. HELP!