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This would be my recommendation too, though I realise you don't want recipes. It really doesn't take long, wap it all in a blender ; it doesn't have to be a nutribullet as stated, I used a Kenwood chef + blender attachment. It tastes properly if you add extra nooch, and doesn't stick to your teeth like all the packaged ones. I made 1 batch with the stated amounts, it lasted me a week. I even tried it as a cheese on toast which I highly recommend.
If you're desperate to buy one, I prefer the Daiya stuff but it is eye-wateringly expensive. Still sticks to your teeth, but less than the Sheese stuff in the purple packet.
https://schoolnightvegan.com/home/super-cheesy-vegan-mozzarella/
I've tried this one and it's pretty easy! My blender is terrible too, so even a lil grainy it still tasted great. As far as I remember I made it without the agar as I couldn't find any anywhere, and it still turned out good. A little definitely goes a long way.