It’s persistence too. The language exchange is great to hear, that’s huge.
I’m much better now from daily chats with my Japanese friends. That’s really what was missing from the many, many, many years I spent before imo. I would study flash cards and eventually Anki decks once that was a thing, I would have practice conversations here and there with other weebs or in class during the brief period I had that. But for the most part I just read manga, which isn’t really all that challenging (usually), and I would listen to anime while reading subtitles. It was so passive
But now it’s the study daily instead of when I feel like it. It’s chatting every night with my friends and having them be like oh no, it’s actually もう一つの, not もう一つ. Or it’s “so-reh” or whatever I’m saying wrong. The constant feedback is essential
Just keep in mind that pulling the anode cap of a crt is genuinely lethal electricity. Like you can get zapped pretty bad by a power supply cap (you should get in the habit of discharging these too) but generally unless they’re seriously big caps you won’t die. A crt can kill your tho so make sure you discharge it correctly. That’s why I say watch a video on how to do it, there are plenty of them and it’s much better to see what to do than follow a text description. Keep in mind that sometimes you have to discharge 2-3x (not usually but sometimes, and never hurts to be safe). You’ll see a spark and hear a pop. You can get a tool to discharge but an insulated screwdriver is all I ever used
Macs of that era are a pain. Good luck. Check capacitors of course, replace battery, reset pmu. That era of mac you can get a service manual which is nice, get a meter and you can trace reference voltages thru power supply and logic board. Flyback is notorious in those imacs so look at that (same as above, check for burn, crack, loose, smell). 68kmla.org has a lot of great repair info on that era