you'd need a custom one built to fit that spot. painting is cheaper.
Easier to remove the doors, give them a good cleaning, sanding, priming and paint. ditto for the base portion.
Drill some holes for hardware.
Paint all the wood baseboard/ door trim a crisp white (same for the light soffit), trim out the mirror, and paint your walls another color.
you could inset a few shelves in that wall next to the sink area to give you more storage for small toiletries. (or, install a medicine cabinet)
you could do a pre-fab wall cabinet like this
Or, some floating wood shelves.
you'd have to cut into the drywall, make your inset between studs, and redo some drywall finish work. not difficult.
If you have the money, get a diff countertop and instead do two smaller mirrors, maybe tile that entire wall.
https://www.maisondepax.com/paint-cabinets-last-painting-bathroom-vanity/
switch out the lights for something nicer.
Up to you what you want.
But the vanity? easy fix if you're willing to do the required prep work. (if not, the paint wont last long)
here are some links to help, with a few before/after shots.
jere's the after. see how the mirror is framed?
https://domesticblonde.com/2017/08/22/update-bathroom-cabinet-this-is-how-to-refinish-yours-for-professional-results/
Simple painti job and hardware on an older vanity:
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Pearly white
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