No.
I think the established charities & relief organizations already recommended by others on this thread are safer and more effective ways of delivering aid directly to those who need it now.
Personally, at this point I’d be wary of any crowdfunding proposal focused on Ukraine. It’s already attracting scammers. Fraudulent organizers set up dozens of phony campaigns for Syrian refugee relief a couple years ago, and cheated donors out of millions. Some of the scammers were in fact Syrian government agents posing as organizers, and they channeled the money into Assad’s war spending.
Not all crowdfunders are suspect and many have reliable track records, but sorting that out is always up to donors themselves. Here’s an FTC summary of the risks:
https://www.consumer.ftc.gov/articles/donating-through-crowdfunding-social-media-and-fundraising-platforms