Mack book air 2015 updated to Mac OS Sonoma.

I used the open core legacy patcher and had some hiccups along the way but eventually got it installed. Before doing anything I researched and a lot of people said Sonoma on a 2015 didn’t run slow or do major damage. Just the battery life went down. For some reason mine keeps glitching in and out, going back to the Lock Screen and it’s slow. I also can’t connect to any WiFi or personal hotspots(as showed in picture) I’m confused on how to fix this. And if it can’t be fixed is there a way to go back to Mac OS Monterey ?