So i wana record myself play Minecraft but don't have a good screen recorder. Also i haven't found a built in recorder. What do I do?

you could try and get a capture card and get an adapter for your tablet

You can record with an external device, like a phone or camera

I am a proud Kindle FIre 8 owner, and you have to download something off of the internet on an apk website, this is highly risky and luckily I found a website that wasn't viruses. However, these apps slow down your device and bettery so I highly do not recommend it. If possible, use an external recorder. If you go to my earliest youtube videos you will see that they are screen recorded on a kindle fire 8. I used SRC

ok thanks

when I still had my old Android phone I used DU Screen Recorder and I liked it a lot

You could use Fenix recorder that's what I use!