I switched to ESR channel (38.5.2) but I don't know how I'm going to use a newer ESR when it moves to a broken release. Too many extensions stop working and XUL

I switched to ESR channel (38.5.2) but I don't know how I'm going to use a newer ESR when it moves to a broken release. Too many extensions stop working and XUL extensions are the essence of Firefox. Tried using Chrome but so much of the ux is different or incomplete to a Firefox user that it's impossible to feel at home.