Someone plz tell me why the grappling system sucks so badly

If you’re a wrestling specialist it’s so much harder to deny their takedowns unless you’re preemptively body blocking before they shoot, Clinching means absolutely nothing & ends within 2 seconds, and once you get taken down they just build the grappling meter until it’s full, then transition for better positioning or they’ll posture up every time. There’s no real way to deny this? especially when I’m the one with the better positioning in full guard… you can’t even throw elbows back to build your own meter because it’s an instantaneous posture?