>>12036019
I didn't start playing Shmups until I started dabbling in emulation in my teens. Most of what I played were on the SNES and NES

Not particularly big into bullet hells, so I mostly stick with traditional horizontal and vertical shmups

Give Gradius, Twinbee, and Fantasy Zone a try. They're kind of rough to start out with, but easy to understand once you get the hang of it