Seeing snakes in one’s dreams is interpreted with enemy. You should be careful. The nafs of man is his greatest enemy that always accompanies him. It always prompts to evils and incites to commit sins, and allures towards lust and desires. You should take care of it in the way that you always follow Shariah rules and try to keep yourself away from evil deeds.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband