Premiere Pro with serious issues

I work with Premiere Pro since 2018 and it always had some issues but nothing serious. Now, I bought a MacBook Pro Max for video editing, one of the best ones in the market. I installed the latest version of Premiere Pro and it is insane.... I just can´t work. Infinite issues. The program says "error importing", "error exporting", it takes HOURS to import videos, when I render videos, the video files came with black parts and audio glitching, stupid glitch issues with image too. Issues everywhere. I am freeking out. I am paying a program that is just not working properly. I would like some help or my money back.