anyone having browser extension supporting problems just download an old version of any browser like one year old, you will find them in that techguru or something website
ive used a non updated brave since 2020 i just have to manually unpack extensions because extension website is not supported, majsol works fine for 4 years now
also had to download chrome this year because twitch was shitting itself and extensions there work fine as well because its an older chrome version, highest supported for win8.1