Just throwing this out there. Before buying an OTG cable and a USB flash drive and then spending the time going through the process, consider whether you really need to or not. Everyone uses their devices differently.
If you subscribe to a ton of verified streaming services (Netflix, Hulu, Disney+, HBO, etc.) then chances are you will run out of space eventually. But how many apps do you really need to download to fill up all of your free space? Right now I have 27 apps downloaded on my device that take up a total of 2.7GB and 500MB of cached data. I don’t even use some of those apps and should probably delete them. Typically a firestick will have about 5GB of free space because the system apps and everything take up approximately 3GB. If apps are the only thing eating up your storage space then I’d imagine you need 50+ to run out of space.
If you download content on your device you are going to run out of space real quick. Whether it’s movies, shows, or recording something off of IPTV. There’s probably a better way to go about it.
As I mentioned, everyone uses their devices differently. I personally have an IPTV service that I use with Tivimate. The only time I record anything is if it’s a live event that I can’t get on demand later (sports, the news, etc.). I also use Kodi with a single add-on (no build) and real-debrid. I never have to download a single thing. The only other apps I really use are my VPN, Pandora, and YouTube. I have other apps downloaded and logged in with my parents TV provider info just in case I ever need them, but I think that’s only happened once.
Not sure if this post will be helpful to anyone or not. Just thought I’d throw it out there as something to think about. If you’re new to cord cutting then you don’t necessarily need to rush to get a USB drive and OTG cable. Why spend the money before finding out if you really need to?