I see internet plug-ins that were installed years before your computer existed, likely moved by Migration Assistant. One, a component of DivX could be an issue. there were reports here of outdated version of DivX could slow macOS. If you still use DivX, update it. Otherwise, send it an eviction notice.
Another thing— you may have done the computer equivalent of "bringing a knife to a gunfight." Those Adobe apps are very demanding, using a lot of energy and creating heat. Macs have a thermostatic system that, should it detect a significant increase in internal temps, will clock back the processor to a lower speed to reduce heat generation. If things get too hot, the system may shut down the computer.
Here's where my "knife" reference applies. No M-series Macbook Airs have cooling fans. Nada. They are convection-cooled just like original G3 iMacs which also ran hot. Macbook Pros have one or two fans depending on model. You may be seeing the effects of heavy workloads on a fanless computer.
Can you reduce it? Maybe.
— Make sure all the exterior metal surfaces have air contact. That may mean using a vented stand to expose that nice spread of heat-sinking aluminum that is the case bottom.
— Using an external monitor increases workload.
— Where possible, only keep a minimum number of apps running in the background. Apps playing video, be they adverts, shows, or video-conferencing, are big heat generators.