Minecraft java doesnt work

Hi there Coolcatphantom welcome to the community forum! Christopher here, an Xbox fan just like you and has been on Xbox for years already. I would really love to make your day by helping you out. Payment errors are often difficult to track down; they can happen in different steps of the payment process for a few reasons.

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Try your purchase on another web browser or device, and make sure that the browser is the most current version.

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Use a Minecraft Prepaid Card

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Minecraft prepaid cards can be used on a Microsoft account (that does not already own a copy of the game) and entitle the cardholder to one Minecraft license (one copy of Minecraft). 

There are several different versions of minecraft. Minecraft: Java edition is PC only and can only crossplay with Java players (mac, Lenox, PC) The minecraft that doesnt have a version next to it is the play together version or more commonly called bedrock.
Bedrock is the version that can be played across mobile, console, and PC. There are also editions that are made specifically for most consoles and even a stand alone mobile version. Examples would be Minecraft: Xbox One Edition, Minecraft: Pocket Edition.
These do not work with Bedrock which is just called Minecraft. Java is the most updated version of minecraft while bedrock would be right behind that one. The others I'm really not sure how often they update them if at all. Each edition of Minecraft has to
be purchased separately. I happen to own both Minecraft: Xbox one edition and Minecraft since they released at separate times. I also have Java on my PC. As for your issue they do not have a Bedrock version on the 360.

I am experiencing the same issue. Nothing states JAVA EDITION, even tho I have it and have used it once before. All that I see available is Minecraft Launcher(doesnt open anything when I click on it), Minecraft Dungeons, & Minecraft for Windows PC bundle, all of which don't allow me to access the Java Edition which I need to access an alpha custom server. Very fustrating.

Minecraft for windows. Java edition works just fine

yes i installed minecraft on my mobile before, but i can play it on my pc since i bought it. So why cant i play java, is it because i installed the mobile version first? but even so, its doesnt change the fact that i can play bedrock on pc, but not java.