How to Make User-Agent Changes Persist W/O Adding an Extension

I know that we can change the UA of the Edge Chromium through Dev Tools > Performance Tab > Network Conditions ... but this is obviously fleeting as once you close that tab or the Dev Tools or basically anything that takes you away from that interface, the changes are lost.

I know there are extensions that can be installed to do this for you per tab and so on, but is there a way to make this persist or change it in the underlying interface without installing an extension? Any help is appreciated.

Shouldn't really matter but in case it does, I am on Windows 10 Pro and running Edge Chromium 88.x - thank you.