Had a look at Blomstra who do dedicated Flarum hosting but in my opinion they're a bit spenno for what you get. Basically they would be doing nothing much to collect 100€ per month.
On Flarum, I think the project is a tad stagnant despite the fact it is also quite good. The lack of full text search out of the box is a bit embarrassing.
I have the skill base to set up a VPS with this forum these days, but I don't have the time in general … I have been working two projects and renovating a house simultaneously lately, and I'm promising everybody I'll slow the fuck down at some point. 😆
I personally dislike Discord, Slack etc as my clients are always forcing me to use that shit, and it makes me feel like I'm at work. Would rather have one of these old school web forums but with reliability.