These days, you can get legit good AI for free and without needing any demanding hardware on your end.

Install SillyTavern:
github.com/SillyTavern/SillyTavern

Tutorial and video:
aicharactercards.com/guides/sillytavern-installation-instructions/

Then choose a model. I'd recommend starting with Gemini, but you can try Deepseek, K2 etc. for free.

rentry.org/sukino-findings#if-you-want-to-use-an-online-ai