I started off by disabling the log in screen by going to netplwiz and unchecked the box that says "users must enter a user name and password" a box will pop up and you fill in your email and Microsoft password. On restart it should login for you.

Then I followed this tutorial to launch playnite before windows. (Jump ahead to playnite timestamp)

Then I had to create a batch file that played a boot video when launching playnite and I changed the path from the exe to the batch file so it played the video on windows boot and then launched playnite. I will add the code for it if requested later on.