Try an onn. 4K Google TV box from Walmart. It's a standard Google TV box with no extra bs for only $20. You can load whatever Android TV apps you want on it, like SmartTubeNext to replace YouTube. It has no ads, sponsorblock, etc. Besides ReVanced for Android phones, SmartTubeNext is the best for TV.
I recommend the onn. 4k Google TV box from Walmart. They just released a new version. It's a standard Google TV box with no extra bullshit and just as powerful as the new Chromecast. Plus, only $20. I have one and it runs fairly well, but it's even better with a 3rd party launcher. Then it's super fast.
+1 for nzbgeek and may I suggest bundling it with nzb.su. If nzbgeek doesn't have something you want, nzb.su probably will, and vice versa. I have not found another indexer to have something I could not get with those two. And I have not found a single indexer to have everything. So they compliment each other very well. Plus, they're not too bad price wise compared to some other well known ones. And registration is public, so you don't have to wait for an invite or for them to open registration.
You could use just one, and I'd suggest it be nzbgeek, but you will probably be missing some things that the other will have.
Hah, I'm also running FLauncher. It was the best/cleanest I found with the most customization.