Help me

Hello fellow riders, About a month ago, my XPulse’s rear rim got damaged, and the service center replaced it while reusing the old spokes from the previous rim. However, after 3-4 days, I noticed that the rear tire seems slightly tilted and i feel like when i do hard break on back tyre its started skidding . Could this be an issue of improper fitment? Since this is my first bike and I don’t have much experience, I would really appreciate your advice on how to fix this issue. Thank you in advance for your help!