I cant Purchase/redeem free trial of xbox game pass

Hello Allyson, this is Manuela. I'm an Independent Advisor and community user like you, ready to assist with this.
Not a Microsoft employee.

I understand you’re having some trouble when trying to purchase a subscription. Let’s try to sort this out.

For this purpose, I would like to ask the following questions:

Where are you located? Your country.
Is the payment method you’re trying to use issued in this country?

Hello Allyson, is PH (Philippines) appearing as your Microsoft account region?

https://account.microsoft.com/profile

Additionally, do you have a Game Pass or Live gold subscription active on your account?

PH and yes its issued in the same country

Thanks for reaching out, DSmezzer!

Only one Game Pass trial can be redeemed per account, I'm afraid; if you have already redeemed a free Game Pass trial, you would not be able to redeem a second trial on your account.

We'd recommend giving your extra trial code to a friend who might enjoy it!

Hello John,

Trials are basically like a beta. There are limits to trials, reason the games are asking you to purchase is due to it isn't a full Xbox live gold subscription. You also need billing information on the account to get free games with gold that are backward
compatible. If you are still having trouble after getting gold with the games please feel free to come back and we will help you out. here is a article on

Xbox gold trial.

Here it clearly states cant redeem backward compatible

For Xbox 360 console customers only:

• You can’t redeem backward-compatible Games with Gold with this type of Xbox Live Gold trial.
  

Thanks,

Brad