how do i download and play games on my PC that i own on my xbox account?

nevermind i figured it out. i had to be signed into xbox live on the xbox app on my laptop.

You would need to purchase it for the PC (or Game Pass) in order to play it on the PC. Only games that are Play Anywhere titles can be purchased on Xbox and redownloaded on PC without purchasing it again (or vice versa). https://www.xbox.com/en-US/games/xbox-play-anywhere

Wait so all he needs to do is make his own account on my laptop and download the game then i can play it on my own account and i can stay the admin of the pc?

im kinda dumb

Seems unrealistic that I have 3 children and would have to purchase the game for each of their accounts.

Also, how would I make the purchase using my son's account? He doesn't have a credit card of his own and I don't want to enter my credit card to his account.

Also, on my son's previous PC (windows 10) this did work. I could log on to his PC with my user account, download the game from the microsoft store, and then my son could play it on the same PC (when logged in with his own account).

So what am I doing wrong?

thats the long winded way, just sign out of the xbox app, sign in with the account owning the game, download said game then sign out of the xbox app and sign in with the none owning account and play. been doing it this way for a very long time now for my sons, on their own pc's too.