Making LOADS of Compost in A SMALL Garden

I've learnt so much from Garden Youtubers about composting but it took me a while to adapt their principles to a small space. I couldn't figure out a way to make hot compost with the limited materials I had without spending a bunch of money on a Hotbin. This method is easily the cheapest way to get a hot composter because it doesn't cost anything. That's a hard price to beat to be honest.