Instead of starting your own non-profit or another kind of organisation, you can work with an existing organisation under a formal arrangement known as fiscal sponsorship. This is when all income is paid first to the sponsor, who keeps a separate account for you. Payouts, too come from the sponsor.

For Europe, we recommend you look at opencollective.com

Your organisation is then just an informal collective.

One website that is full of information about fiscal sponsorship is https://fiscalsponsorship.com/ tailored to the US market.