Install games with Game Pass?

I wanted to ask if I install a game because I have subscribed to the Xbox Game Pass for a month, then after this month I can still access it or can I only play it until I have subscribed to the Game Pass

Only as long as you have the Game Pass

Of course only as long as you have gamepass, otherwise the whole gamepass system would be pointless

You can only play the game for as long as you have subscribed to the Game Pass. It's clear.

The Xbox then displays an error message that a license is required and that you should buy the game.