lags please let me refound

You would need to submit a refund request. https://support.xbox.com/billing/xbox-subscriptions/digital-goods-subscriptions-refund

How do get a refund for Forza Horizon 4 on PC?

• Sign into your Microsoft account on Xbox.com.
• Click on your gamertag in the top right.
• Click on My Account in the drop down menu.
• On the top bar look for Payment & Billing.
• The hit Order History from the drop down.
• Finally, find Forza Horizon 4 and hit Request a Refund.

So you tried to get a refound and they didn't refound you, that's what i understood.

Maybe your game wasn't refoundable.

I go on this website : https://account.microsoft.com/gifting/history

Its for gift refound , but It comes out written to me " Try a different page The page does not exist. "

I try to refound on my order history but there is not option reimbursement

For refunds you would need to contact support and speak to billing. http://support.xbox.com/contact-us