I started at a pretty high level, with my grandfather's old Pentax Spotmatic + 55/1.8 Super Takumar lens. It only limited my photography because the shutter kept failing for some reason (Lemon camera? Lousy repair tech?). My sense of composition and light was woeful, but I had plenty of enthusiasm, and was sufficiently ignorant not to be too put off by my lack of skill.
But most of the camera buys which followed, were simply about my wanting to buy something. And buy I did: I quickly discovered that if I were willing to accept secondhand equipment in less than perfect condition, my limited funds could buy me a lot of camera, especially if I sold off the older equipment to help fund it. And thus, long before my photographic skill merited such things, I was shooting with Nikon F3, followed by Leica M.
In many ways, Leica M was a downgrade, but it sure was a classy one. And TBH, I needed something to impose photographic discipline upon me, because left to my own devices in the vast playground which was Nikonland, I was likely to wind up owning mountains of gear, but mastering none of it. In retrospect, the "magic" of Leica was that it made me feel incredibly privileged to own a battered camera body + 50/2 lens but (shrug) it worked! It got me to take the 50 mm focal length much more seriously, and not to automatically dismiss moderate-speed optics. It was with the M4-2 + 50 mm Summicron lens that I really felt that my skills had taken a noticeable leap forward. It also didn't hurt that I had started to carry a camera with me more often, not just on weekends and out of town treks.
Older (wiser?) me realizes that I might have accomplished much the same with any number of other pared-down outfits, but I think my younger self "needed" Leica's high pricing to rein in my materialistic urges. Although I no longer own any Leica M, the lessons of those days, of lighter, pared-back systems, have stuck with me.
Soviet cameras weren't really an option for me until the 1990s, when Kiev 60, 88 and Lubitel imports became a thing. I guess Cambridge Camera had been importing Zenit and Kiev-4 for some time, but I never saw that stuff in the western USA.