Have you tried freelancing?
Or are you currently unskilled in it and looking to up your skills? If so, then I'd take some courses to get you familiar and then start helping an open-source or non-profit initiative to get some real experience. Then, if you are having trouble finding a paid gig, look at founders who want help with project management but are only paying equity as they will likely be willing to take a bet on someone with less experience.
