Hi I'm pretty new to weightlifting and in my gym we have these machines that sort of stabilize the barbell for you so its easier to perform the movement. The barbell moves in a track that keeps in in place. It takes a lot of stress off your shoulders(dont know if thats good or bad tho). Theres also one for bench press that does the same thing. I dont know if this is the regular name but at my gym they call they smith squat machines. I'm going to be doing a fbw 3 times a week with just compound movements and I wanted to know if it is ok to do bench presses and squats using these supporting machines because it's easier for me to keep my form, or if it is best to just do a plain squats and bench presses. Thanks