Are there any young audiophiles out there?
Yea me ! 61 yrs young

Although I started about your age ,built a ~40 WPC tube amp ( 2 pp 6l6 GT outputs per ch. ) in high school electronic class for sr. year project . used it for some years . Bought some University speakers to play it on and a Garrard model 50 with a Stanton 500e!
and a used Lafayette FM tuner.
ofc I worked after school and on weekends that paid for the stereo and the 57 Chevy bel air, the 305 Honda scrambler and all the parts and upgrades that went into to those also. Lots of systems since then mostly new stuff in the studio now .
You don't have to spend a fortune for good sound contrary to what the magazines will have you believe just get some decent
not real expensive
passive 8" 2 way studio monitors and a modest
powered Sub ,an inexpensive pro amp
Behringer A500 or
Crown xls 1000/1500 or a
QSC GX3 amp) ,Your PC or whatever and an USB/DAC maybe an inexpensive but very good
Schitt Modi.
You will need a pre amp if you spin vinyl (maybe one of the
ART DJ's phono pre amps) you can build a decent *New killer system like this for around ~ $625.00-$725.00 add in $79.00 for the preamp + whatever $$ for the turntable if you spin Vinyl . You won't be able to approach the sound at BB,BB /Magnolia .Amazon or wherever for anything close to that money. You might get an HTIB or sound bar and a sub for that .... it's almost criminal I tell ya!
Treat the room with some sound absorbents and bass traps *(you can make those inexpensively ) it will sound better or at least as good than a lot of new 5 ++ K off the shelf systems or most vintage gear (been there done both several times )in a modest sized room certainly better than any receiver I've heard including the Sony ES in my HT set up . ofc there may be some exceptions I haven't heard them all.
Some of the decent vintage gear *can cost as much or more for just a decent restored receiver or amp in *some cases .
ofc OTOH if you choose vintage there are always the lucky bargains here at AK in $$ and sense and Barter town .
Some of the Black plastic (if still working ) 90's early 2000's AVRs were not bad and they are cheap on the used market .
Disclaimer ( I have 3 vintage Pioneer receivers SX 980,1050,3900 so I know how they sound (decent )
with the right speakers . but they have limitations. The best ones are the (very good ) the SX 1050 and SX1250 fageett about an SX1980 you need at least 6 or 7 bit coins (at today's price for one of them if you can find one and 2 guys to move it!) you will extremely lucky to find a decent serviced SX1050 for less than a grand an SX1250 even more . Modern electronics have come a long way including the class D type switching amps they use a lot now.
OTOH if you find some working phat McIntosh gear at a bargain meaning any working McIntosh gear (not likely) jump on it!