I have the same problems regarding Wordpress so it definitely won’t be that.
I’d look into static site generators but the problems with them is that I will always be tempted to tinker with it which is why I went with a hosted solution.
I will look into Substack as I’ve seen it used quite a bit around here recently. If not, I’ll see what Squarespace has to offer.
I actually tried emailing the owner of Svbtle (the platform I used) about removing GA but haven’t had a reply.