The main reason anyone chooses cloudflare is for their CDN (which I suppose is a "reverse proxy"...not a way I'd refer to it but technically yes that's essentially what it's doing). If you don't need the CDN or any of the other fancy features there are plenty of straight DNS providers out there (and often provided by the registar these days).

Ok to turn this off you go Domains → Overview → your.site → DNS → Records → then Edit each entry to DNS Only (gray cloud). MITM gone now (I hope).

OK, how can Cloudfare edit your HTML without it passing through your server?

If the browser connects directly to your web server, how can there be Cloudfare's analytics stuff?

Check what IP address you are connecting to when you load textlog.cc. Is that an address that you control? If it's not an address that you control, where is it getting your page, and is that not called proxying?