I have a bunch of services on a home machine and I use cloudflare tunnels to access them on the WAN. My ISP locks down ports 80 and 443, and so tunnels were the most viable way for me to get various pages online easy; especially helped since it's easy to configure and free to boot.
But I've been seeing more people talk about it being privacy invasive, and while I'm probably gonna remain largely ignorant on why, I was wanting to know if there was an alternative to this that I can use?
What is your goal? If it’s to have personal remote access, set up tailscale on all the devices you want to connect. If it’s self-hosting a public webserver, your options are hosting on non-standard ports, changing ISPs to one that lets you host, or tunneling to some other third party location that lets you host.
There's also headscale if you want to selfhost
https://github.com/juanfont/headscale
And of course, as others mentioned, you can always set up a VPN and tunnel in; ISPs rarely block VPN server port access.