I went crazy buying bags when I started. Three do almost everything I need. I use my Pump Pillow , Gamechanger, and a small rear bag 99% of the time.
I’d recommend you get a good set of binos, decent rangefinder, a Kestrel with ballistic app, and a decent bag to carry it all in. I use a Gunslinger . That will get you started and be all you need for most matches. Eventually you’ll want a good tripod and spotting scope.