When you've just finished your first budget racing drone, the temptation is to immediately start swapping motors or flight controllers, but that's actually putting the cart before the horse. Your budget build is probably flying fine, and what's holding you back isn't the quad itself yet.
Start with your FPV goggles. If you bought a cheap box goggle setup to save money initially, upgrading to something like the Skyzone Cobra X or DJI Goggles will transform your flying. The difference between a blurry, low-resolution image and crisp, clear video affects everything from your confidence to your ability to see obstacles. I flew for months on budget goggles and gained maybe two seconds when I upgraded, simply because I could actually see where I was going through tight gaps. This matters more than shaving 20 grams off your quad.
Next, get quality batteries and a proper charger. Many beginners start with two or three cheap batteries and a slow charger. This is frustrating because you spend more time waiting than flying. Invest in at least six good 4S or 6S batteries from reputable brands like CNHL, RDQ, or Tattu. Pair this with a dual-channel charger like the HOTA D6 Pro or ToolkitRC M7. Now you can actually practice, charging one set while flying another. More flight time equals faster skill development, period.
Third priority is your radio transmitter if you started with a basic one. The difference between a budget transmitter and something like the RadioMaster Pocket or TBS Tango 2 is mostly about feel and ergonomics, but after hundreds of flights, this becomes significant. Better gimbals give you smoother control inputs, which translates to cleaner racing lines.
Only after these three upgrades should you look at drone components. By then, you'll have crashed enough to know what breaks and what you actually need. Maybe you've broken three sets of cheap motors and realize quality ones would've been cheaper overall. Maybe your frame is cracked in five places. Let your experience guide those decisions rather than upgrading blindly.
The pattern here is simple: upgrade the things you interface with constantly and that directly affect your ability to practice and improve. The drone itself is just the tool, and a mediocre tool in skilled hands beats a premium tool with poor visibility, dead batteries, and uncomfortable controls.