Toxic Manager…Need Suggestions?

So I’ve been working as a Backend Software Engineer. Recently, my manager left the company and I’ve been assigned a new manager. Not to boast but I’m decent at my job and able to find better solutions than my peers, my old manager ignited this passion for problem solving in me. This new manager is really toxic he pass comments on my colleagues (Same level as me) you have short term memory loss, badam khaya kro and shit! He’s always chasing girls in office. There is one girl in my team he acts like a different person in front of her (although she treats him really bad because she thinks he’s a creep). So a few days back, I was working on something with some other manager who knew the context to the problem (there is an internal npm package my company has which only few developers have contributed to, I recently made my contribution to that package) and this new manager has never made any contribution to that package so he started telling the other manager that this guy(Says my name) is very slow and the other managers defends me instantly saying he’s the fastest in the team. I’m really pissed tho. I want to do something about this guy. He has been doing such things for past month and always tells the sob story of how much he has struggled in life. Need suggestions on how to tackle this? PS: I’ve asked my parents if I can resign they are fine with it but I don’t want to resign in this bad market without an offer