Providers that I do know of probably don't work in your country. Personally I run my own VPN servers. You just buy a cheap VPS in some country with not too much censorship (Netherlands is a pretty good one but it might not be in the future due to EU shenanigans), then you can use something like X-UI panel to easily make a VPN server. X-UI also supports a bunch of other VPN protocols, including more common ones like Wireguard, so you could start with making your own Wireguard VPN before moving on to something more advanced

Can't name something from the top of my head but this article seems to provide pretty decent rundown, though I think the info might be a bit outdated now when it comes to protocol detection rates - they are probably way higher now

I know shadowsocks is not gonna be usable once some serious DPI tools start getting rolled out. It's already not usable in China, Russia and Iran. The problem with shadowsocks is that unlike vless+reality, it doesn't attempt to disguise itself as normal website browsing (at least by default), so newer firewalls can detect it pretty easily. I don't have any experience with obfs but I'm pretty sure it has the same problem. The traffic doesn't look like anything in particular, so firewall just drops it