Hi, yes for Android 13 you need the T build and for Android 11 u need the S build. U need the recovery files to start the installation process.
Here: https://images.ecloud.global/dev/instantnoodlep/ the first file on the left, the .zip file is the OS installation file, but before u can install that u need to flash the files in the righ zip file first. The dtbo (dtbo-e-1.21-t-20240325389105-dev-instantnoodlep.img) and the vbmeta (vbmeta-e-1.21-t-20240325389105-dev-instantnoodlep.img) onto your phone using fastboot and adb.
I just went through the process: think u can find a lot of useful information in my post: Oneplus 8 Pro Bricked when flashing Please help