Altough not freelance, but I operate almost 10 websites atm. I use Remix on pretty much all of them since the dx is great and goes fast to develop more complex things. I host every site on one dedicated server from Hetzner with the Caddy webserver as a reverse proxy in front. I have super fast load times and a cheap monthly bill. I could 10x the traffic and it wouldn't be near hitting the limit of the server and it's like €18/month.