TMHI and xbox Series x/ps5

Not sure if anyone really knows a fix or what's going on I've read a lot of stuff about CGNAT and how Tmobile home internet doesn't let you port forward and so when you are out of your house that has the tmo router/modem you can't remote play with either PS5 or XBSX but I've read things that Tmobile is working on it? Is this true? I own a wifi 6e router but I put it in ap mode because I heard that Tmobile, the I think the sagecom fast it's the black one with the little screen, router doesn't like the router being in router modem but I was wondering if there was any way possible to play my PS5/series x, say when I go to my parents house. Is this still not a thing with tmo home internet. I was hoping by now it would be as I get good speeds at my house I just want to be able to access my PS5 from my parents house. Is there anyway I can get this to work without paying money for a VPN service. I really don't want to pay money to use remote play out of my house.