Why are deprotonation at C2 and C4 positions in pyridine more favorable than at C3?

C3 lacks resonance stabilization compared to C2 and C4

Deprotonation at C3 is hindered by steric effects

The electron-withdrawing effect at C3 destabilizes the carbanion

Deprotonation at C2 and C4 allows for resonance stabilization through the nitrogen atom