Advice alert!

I have 3.5 years of work experience in advertising & integrated marketing communication. I don't find my work meaningful, who's waiting for the brand posts?

Recently I had quit my job to travel. I have a total work experience of 6 months in hospitality.

I wanna switch my career to CSR activities/NGO/working in a startup in any other field and earn simultaneously.

Suggestions & tips are welcomed.