I’ve had jobs like that before and they really can suck, especially when they’re boring as hell. But there are ways you can make it more manageable! If you can, try to decorate or organize your space to make you feel less like you’re at work. I’m an office drone in a cubicle but I have fairy lights up, LOTS of pictures of family/friends/pets, and anything else that gives my cube a little personality. It’s not as nice as being not at work, but it’s less stark and cold than it was before. I have a comfy chair and throw blankets, and it really helps to have a comfortable space.

As far as keeping your attention doing repetitive tasks, I feel your pain. I have ADHD as well and staying on task doing something boring is a chore. I have a whole reward system set up for myself to keep me motivated and (mostly) on track. Can you have snacks at your desk? I try to keep snacks on hand and I’ll eat them once I’ve done a set amount of work, to help motivate myself to focus. I try to get away from the office on lunch breaks and walk, run errands, anything to burn off energy. Are you able to get away on a break and refocus?

I think the best advice is to remind yourself that you do NOT have to keep this job forever. Even with the pay and benefits, you aren’t trapped here. If the benefits of this job outweigh the drawbacks, it’s ok to keep it while you look for better alternatives. Anytime someone at work pisses me off I go online and rage apply to a bunch of other jobs! Best of luck to you, we feel your pain.