Downsize to ITX help

Hey guys!

I currently have an AMD Ryzen 7 5800X3D, XFX Speedster MERC 319 Radeon 6800XT on a full sized asRock motherboard. I would now like to downsize to an mini ITX case. I am not sure with which motherboard, PSU and case to go tho. I love the fractaldesign Tera. Also I have a wifi card so the board itself does not have to have that included. I mainly play League if that is relevant.

I would love any and all ideas!! Thank you in advance! :)