How to deal with terrible coworkers?

I feel like this could go under life style so here it is.

My coworker Kim is the most excruciatingly painful person to work with let alone be in a room with her for more than 5 minutes.

FYI: This is my first job, working retail as a sales associate. Been working there 2 months and already pretty much the assist manager of one of the jewelry departments. Kim has been there a year and is just a key holder so it’s not like she’s a manager or anything.

Anyways she drives me up the fucking wall. She loves authority and loves shit talking ppl and bossing ppl around. She’s very passive aggressive as well and super fake. She’s like 50 btw. Does everything by the fucking book.

Anyways at this point I work almost every shift w her. Now I’m trying to avoid her and have my other coworker who I like take my shifts cuz she needs the extra money (legit have only had her take one so far). Idk what to do bc I can’t NOT get annoyed and show that I’m annoyed and don’t like her. I’ve never clashed with a person this much and idk. Sometimes I find myself rolling my eyes while my backs turned or just being super bitchy to her but I cannot help it at all. At the end of a long school day and a work shift putting up w bitchy customers, Kim fucking kills me. I honestly have been thinking a lot about quitting even tho I really do like this job and almost all the people working here. EXCEPT THIS GINGER HAIRED FAT OLD NOSY CUNT KIM.

I need advice even if it’s not what I want to hear like “in life ur always gonna come across people you have to work with that you font like and you cant just quit or else ur gonna quit every single job you ever get”. Cuz ok but she makes me so miserableeeeee