Adjusting the glasses

Does anyone know how to or have good resource for adjusting the arm and nose pads? My nose is not exactly centered, so all my glasses come with the right nose pad not touching the nose, and I can’t seem to bend it so that it sits correctly.

I find it weird how this question does not come up more often here given how many of you buy online.

I generally put some duct tape over the tips of needle nose pliers to adjust the nose pads. Other than that, it’s just trial and error.

Edit: Even when I bought from an optometrist, I ended up adjusting my own frames.