In my case I started playing bass at 13 in high school but never owned my own until I graduated and got a nice used Ibanez Musician as a grad gift and immediately had it professionally turned into a fretless. By then I was a pretty established player so it's a different situation.
first bass I played was the school bass, a surprisingly nice vintage (1970s) fender precision (obviously USA, it was a real fender back then), sunburst (no surprise again there). school even had it modded to badass bridge with some other work done when I was 16 or so.
I started renting basses at age 16 like crazy to try lots out and learn the differences. rented larrivees (fretless only), fenders, hohner steinberger copies (5 string fretless), others. Also borrowed several from friends when I was 16 and 17 years old, a dan armstrong ampeg clear plexi (toured with it too), cheap japanese made p-bass copy with small tele-like single coil that sounded and played great actually, rickenbacker 4003 (!!), hollow body f-hole type electric bass (had some really nice friends LoL), bc rich (a really nice one), oh man the list goes on.
But the first bass I owned was the ibanez musician at age 18.
Now the real fun is with the first amp I owned:
a noname super heavy tube bass amp (vintage) that wasn't very loud, was about 3.5' x 2' by 1', ugly grey, simple controls, a single 15" in sealed cab. seriously, it was uber heavy. quite dull sounding but very clean.
next I "upgraded" to a GBX 4x10 (might have been 4x12) with build in power amp in the cab and the gbx bass driver as a preamp. sounded great for a couple of very specific sounds. no real power though, huge, overall a cool experiment but not a good amp as a whole package. I think the cab and power amp were the issues.
So the amps might be more laughable LoL. I always used other people's amps for real gigs.