I dont know how to cancel my realm plus subscription in windows 10 Minecraft

For Minecraft (on mobile, consoles or Windows 10), your subscriptions are managed through the stores on the platform you first activated your subscription.

Here’s how to quickly access the platform store to manage your subscription:

Go to Settings from the game's main menu.

Find the Subscriptions item in the list on the left.

Click the Manage button on the subscription you want to manage in the platform store. This will take you to the platform store where you can review and cancel your subscription as needed.

Source

Did you ever figure this out? Ive been trying to find a way to cancel mine for 3 hours now.

As far I can check, you should look for the suscription on the Minecraft store page, and cancel it in there.

There's no way to cancel it on the game's menu on Windows 10, only on Xbox.

For Minecraft (on mobile, consoles or Windows 10), your subscriptions are managed through the stores on the platform you first activated your subscription.

Here’s how to quickly access the platform store to manage your subscription:

Go to Settings from the game's main menu.

Find the Subscriptions item in the list on the left.

Click the Manage button on the subscription you want to manage in the platform store. This will take you to the platform store where you can review and cancel your subscription as needed.

Source

I know I looked that up too, but when i do that it just sends me on to the store on the minecraft page

Hi,

on this page it says:

https://help.minecraft.net/hc/en-us/articles/360034670172-Minecraft-Realms-Plus-and-Minecraft-Realms-Java-Edition-FAQs-

I'M PLAYING ON WINDOWS 10. WHICH VERSION DO I NEED? 

You’ll need your subscription purchase to match the
version of the game you are playing. For example, if you bought Minecraft from the Windows 10 store, you'll need to buy Realms Plus for Minecraft.

Now make sure you have installed Minecraft on your PC, then go here:

https://www.minecraft.net/en-us/realms-plus/

and click on "Get Realms Plus" at the top-right of the page.