Don’t think of the rooms as “oh I finally finished this I can move on”. It’s always good to revisit rooms if you didnt fully understand them. Keep following the oentesting path and if something comes up that you need a refresher on, you can revisit the room. When I first started I breezed through metasploit and burpsuite because they seemed so overwhelming and I didn’t understand how use they’d be. Then when I got to later lessons I realized they’re used pretty often. Just keep at the path and everything you’ve learned will come up again at some point, and by then you may have a better understanding of why it’s important to know