Hello, my name is George and I believe I can help you out with your testing task. I have worked as QC and QA Tester for Ubisoft Bucharest and I have experience in testing games on PC via Steam. I do own a PC and a Laptop, but I am not sure how many devices do you wish to test your Project. I also own a PS5, if that helps.
Thank you and good luck with your project!
Best regards, George!