I was mixing up my terms in my head. What I was thinking was the actual size of the frame itself; the distance from the center of the crank to the top of the seat post, not the wheel size.
But there may be some hope: The bike you have may be close enough to fitting you if a good tech can adjust the components. You might need a seat post or stem that is capable of letting the seat or handlebars be adjusted to you. Sometimes they can be gotten inexpensively with patience and searching.
I admit that I went to a derraileur bike many decades ago, but being a 'guy', the 'gadget to fiddle with' part was attractive.
Being able to cusomize the gear for the conditions took time to learn, though.
Just as an aside: Have you insured that there isn't anything out of sorts with bike as it is? I had a lot of pedaling resistance from a rental bike on a vacation long ago that had a very rusty chain, for example. Could you simply need to lube the chain, or adjust something?
I truly wish you the best of luck in finding what works for you.
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