Downloading and using fonts available on Fontesk can be a huge trap. Read it's “Licensing” page. It's simply not safe to use fonts downloaded there, one should really use it only for discovery, at best.
Iosevka is a fantastic open-source font that's fully customizable. I have replaced the fixed font on all of my devices and apps to a custom Iosevka build I made, and I don't think I'll ever turn back.
What a glaring omission. There are tons of open, freely licensed fonts: https://fontesk.com/license/ofl-gpl/