If you use Firefox nightly (and maybe some of the other beta branches too, I’m not sure), there’s a way to get any extension, they just might not work properly. I haven’t really had issues with nightly, despite it being such a bleeding-edge build - although I would recommend keeping a backup browser since sometimes it decides to just stop working
Also check out local smaller orchestras, my local one has $10 tickets, with $5 tickets available for students, and it’s one of the bigger orchestras in the state