Any guideds for setting up a local chatbot?

I have been trying a variety of bots across various websites, and while I find them very fascinating and fun to play with, I find that I would much prefer to have a local AI set up instead of relying on services that, while good, can often be limitating. I am aware that models can take up a lot of resources, so, if it’s possible, I would like to set up something that doesn’t take too much and can give good results. Any suggestions?