Need advice for a 15 days trip around Malaysia

I am a Malaysian btw.

I am planning to go around Malaysia for 15 days and have some healing and self discovery trip. I've been to most of the famous tourist spots, so no no for them (unless you think I missed something).

What I'm planning to do:

1. Backpack and move around places like a nomad, get affordable places to just sleep for the nights.

2. Mingle around with people, be a temporary volunteer, pick up some part time gigs while traveling around, like you see in the movies. E.g. work on an event, or help out a stalls workers on roadside, work in a small cafe.

3. Able to identify myself, like what I want, cry the hell out and explore different versions of me.

4. Most importantly, one of the nights, get wasted and party like there's no tomorrow.

Please help me plan out the locations I can move around to do these things or suggest a to-do within this travel. I know this might look like a filmy fantasy or nearly impossible.. But any help will be great.