Scroll Wheel Alternatives?

I've been wanting to play park management sims (think Planet Coaster/Zoo, Jurassic World Evolution, and Prehistoric Kingdom) for awhile but the biggest obstacle for me has been that I have type I S.M.A. so I can't use a scroll wheel on my own to zoom in on things. I use an on-screen keyboard to type and play games with simpler controls and know I can probably use it for most of the controls in management games so I was wondering if there were any digital scroll wheels or keybinds that I could download.

And before anyone says anythin,g I'm 99% sure that the PgUp and PgDn keys don't work for zooming in games on steam or in any game for that matter but on the off chance they do that will work for me but I'm not ignoring them.