Newbiebuilder1996

Hello, please help, i wanted to install GPU ( MSI MECH rx6600xt ) in the case (Corsair 4000d airflow), and it just didn't fit... I tried to squeeze it in not to hard, but it just didn't get in... I removed first and second bracket, didn't work, second and third, same story, then all three still nothing. I think it's the metal bracket on GPU (too big) but i am not sure, my motherboard is MSI Z690A PRO DDR4 WIFI does it matter?