What’s wrong with your glasses? Sometimes, you can fix little problems by yourself, such as loose or tighten them. But if there are serious problems that may affect your eyesight, you should go to the optical store for help.
I think you’d better go to an optical store, and ask the eye doctor to maintain them for them. Although nose pads are not as important as lenses, you should also pay attention to fix them or replace a new one.
You may need to pick up some eyeglasses repair kits and then adjust it with a small screwdriver. But you may need a few professional tools but don’t tweak them randomly to avoid too high or low.