Looking for some business ideas.

I want to start an online business. I have a very good pc. I tried many freelancing services to sell but i failed and i also don’t have any interest in this field like (editing, graphic design etc).

Suggest me some business or any service idea which is unique and has large scope. I am interested in AI also and i also developed some simple agents using AI. Like:- Chatbot and Calling agent.

Please tell me marketing strategies also with your business ideas. Because i am not good at finding clients online.