Arkenfox user.js configuration help and question

Long time arkenfox user.js here, just recently, I noticed this once thing that it really bugging me, the fonts

So, Im using “inter” font on Linux which resembles MacOS SF but better. However, my Firefox’s profile with arkenfox is not using that font, well not technically but the font does not look the same.

Quick comparison: Imgur: The magic of the Internet

That is the reasonable explanations behind this issue and how can I make arkenfox uses the font my system is using? Is there any harm reverting to my system font?

Also, I also need help with using searx as my main search engine. Right now, Arkenfox defaults to typing url in the url bar which I dont want. I want to type in the search words, hit enter and the browser will automatically uses searx

Finally, in Firefox, there is an option to “Allow pages to choose their own fonts, instead of your selections above” which I left uncheck. Is there any harm in this?