Here's a list of mainly affordable brushes that I use on a daily basis and perform great. You can have great makeup products, but if you don't have good brushes, then what's the point?
Map
Sections
3
Face
Eyes
Sets
Face
Face brushes that are worth it
what I use to apply my pressed powder
Powder Blurring Brush
great for applying contour or liquid/cream bronzer
Contouring Brush
what I use to swipe away any excess powder
Precision Powder Brush
the face brushes in this set EATS especially the powder ones
Believe In The Bristles 20-Piece Face & Eye Brush Set
what I use to apply loose powder
Pointed Powder Brush
one of the best concealer brushes I own
M132 Angled Concealer Brush
a really good brush for blending out foundation
M104 Domed Foundation Brush
another good cocnealer brush
Expert Liquid and Cream Concealer Makeup Brush
my favoriteeee highlighter brush
F19: Highlighter Brush
a good and affordable brush for contour/bronzer
F14: Angled Contour Brush
Eyes
Brushes for eyeshadow that are worth it
great brush for packing on eyeshadow
Eyeshadow "C" Brush
a great brush for blending eyeshadow
M333 Large Rounded Blender Eyeshadow Brush
another great brush for blending eyeshadow
Fluffy Eye Blender Brush
a very affordable brush for liquird/cream eyeliner
E117: Small Eyeliner Brush
great brush for smudging eyeshadow or eyeliner
E118: Eye Smudge Brush
one of my favorite brushes to use to fill in my brows
E114: Angled Brow Brush
my favorite brush to use for cutting my crease
E123: Eyeliner Blending Brush
Sets
Makeup brush sets that are worth buying and using
a great makeup brush set especially for beginners that is under $20