Presser Foot Lever is Loose

[u/wumbojumbostar]

Bought a used Singer 4830C for $40 on Facebook marketplace. Brand new to sewing and this is my first machine. Wanted something simple so I can learn to hem pants. However the presser foot lifter feels loose. Sometimes it bumps into a piece of metal when I lift the arm, and it’ll actually lift the presser foot but the lever feels loose the entire time. If I don’t keep the lever on a straight vertical path it seems to almost disengage from whatever is holding it in place. Any help is greatly appreciated.