High Swap can be due to utility interference, even unneeded VPNs.
We may be able to spot somthing if you post an EtreCheck report. We can quickly and within the limitations of these forums help you determine what issues are at play without our playing a protracted game of "20 Questions" with you that could go on for days.
EtreCheck Pro is available here: https://etrecheck.com/en/welcome.html
The free version will do nicely for this purpose, although the app is worthy of our financial support.
We can see hard data about drive performance, software issues and interferences, and RAM usage. Etrecheck is the development of a long-serving and trusted ASC contributor. It is a reporting app, not a "fix-it” app, expressly for displaying information in these forums to help us help you remotely. It will not reveal any personal or secure information.
Please see this excellent user tip on how to post long text reports like EtreCheck's into a forum response:
How to use the Add Text Feature When Post… - Apple Community
NOTE: Please post the entire report unedited. There are subtle hints there that may seem trivial to a new EtreCheck user, but can speak volumes to those of us who have evaluated thousands of them.