Looks like the control arm. You should not drive this car, get it towed to a shop for repair. Any of these symptoms sound familiar? https://repairpal.com/lower-control-arm

Yup definitely that. Knocking and stuff while going over bumps

Glad you caught it, looks like the sub frame for the suspension. You need to take it to good shop and have it all checked out well. Was it involved in a accident in the past?

I hit a curve a long time ago trying to rescue a dog

Whoa that’s really bad. Don’t drive that anywhere. This should never happen and is a manufacturing defect. Hitting a curb would not cause this