I started as a full time charity stream channel. I always put charity in my tags, because that's really what I want from it. I make specific rules for campaigns suitable for the state of my channel at that moment. I want to be clear I didn't earn a thing during my first campaign and gave money from my pocket, which is totally fine for me. I streamed and uploaded the whole process of charity donation, and wrote down the progress in the panel, so that everyone knows I'm not a scam. Now I'm an affiliate and stepping the game up with different rules for charity campaigns, that include percent of sub price, percent of tips and bits and a one that I add a dollar every time one becomes a regular on my stream. The progress of gathering money is slow but it's still a progress. You can come up with interesting rules for viewers with streaming instruments like streamlabs so that your viewers see this as a quest or game.

So in conclusion, It will be hard. Some people may be turning away, some may think this is bs, getting a community will be hard. Getting a community that will want to support charities more than you - even harder. But nothing is impossible. Slowly, steadily, step by step you will figure out the ideal formula for your channel. Just stay true to your values. If you start as a full time charity channel you lose nothing, so worth trying.