Hey there!
My name is Ravi, an independent advisor and expert user. I am happy to help you. :)
I understand how confusing it can be when you see the loading process getting stuck.
Please try this method.
1). Press Windows Logo + Shift + Esc. to open the Task Manager.
2). Click on the dropdown menu saying "Minecraft", or similar.
3). Select the process "Runtime Broker" and in the bottom-right corner of
the Task Manager click on "End Task" or right-click on "Runtime Broker" and click on "End Task".
Feel free to get in touch again if you have any additional questions.
Cheers,
Ravi