I can't play online on xbox 360 games whilst having Gold, and a xbox 1

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to play online you need to have a (GOLD) in the xbox 360 and or the xbox 1

Whilst it would be lovely to get online play for free on Xbox Live, I can't see it happening any time soon. Microsoft (and Sony) have added some games as added value to the Gold/Plus accounts so it's not just paying for the privilege of playing online anymore.
They are both great sources of revenue, and you'd hope the money feeds back into the services to maintain and improve both Xbox Live and PSN.

There's certainly an argument to be had about free to play games being online accessible without an Xbox Live Gold account though.

It only disconnects me when I'm playing Wars, with everything else it's perfectly fine. It has to be Wars or the 360 emulator, it can't have anything to do with my internet if the one and only time it happens is whilst playing 1 specific 360 game. Every
other time I use my Xbox, like when playing Halo 5, my connection is perfect and I don't get dropped. It's only whilst playing Wars.

Update. This is also happening playing any 360 games on my xbox one X and Series X. I share my account with my son and whilst he can play all games online no problem, as soon as he tries a 360 game it tells him he needs a gold account..something not quite right.