Bed time battle

My 3 y/o went from being an amazing sleeper to me being at my whits end. Every. Single. Night she will fight going to bed for HOURS. Bed time has been 8:15pm for over a year now & she won’t stop fighting it until after midnight. She comes up with every excuse known to man to leave her bedroom to come find me.

I’ve cut down on screen time, I’ve tried snuggling her to sleep, increased activity during the day, cut excess sugar out of her diet, she won’t take naps anymore & hasn’t for a while, I’ve bribed, I’ve given consequences, I’ve tried everything I can think of & nothing helps. I dread putting her to bed now & I’m so exhausted from fighting with her all night.

Nothing in our lives has changed recently.

Please help. I don’t know what to do. I feel like such a bad mom because I’m on such a short fuse because I’m so tired...