Best Coachings in Patna for CAT prep?

As per the question I wanna know some good coaching centres for CAT prep in Patna (the ones that actually teaches and not just charges Expensively and only a show off)

Edit: for the context, currently I live in a city in MP but found out that there are no good coaching for CAT and not even any other competitive exams(ik from people's advices and I've tried some demo classes myself) well I could've chosen any city but why Patna? Because I've done my +2 from there, I'm very familiar with the city & people and I know some very good teachers there, also I'm an introvert and I don't adjust anywhere easily, currently where I live I'm very lonely,depressed and in Patna my bestie also lives+ it's not even as expensive as where I live, even if not the best I'm sure it's not as bad as where I live. So I hope it's good for CAT prep, also I need more reasons to convince my parents to opt for that city so drop some, overall I didn't choose Patna just solely for prep but also for a good social life, I've never had this worst social life that I have rn