This is frustrating because FNF is a browser-based game. You shouldn't need a high-end PC to play it, but if you can't access the host site, you can't play the game.
💡 If Week 7 is locked, press on the keyboard (some builds unlock weeks with number keys). fnf week 7 unblocked github
Many developers host the game directly. You can often find playable versions at URLs like [username].github.io/fnf-week7 . This is frustrating because FNF is a browser-based game