How to say "Congratulation", "Good Luck", and "God bless you" in Hindi language?

Question

Answer

good luck- saubhagya

it is the case when we say that it is 'our/your goodluck' more precisely if we talk abt someone's luck which is good

hamaara/aapka SAUBHAGYA

Answer

congratulation-badhai

congratulations- badhaiyaan

heartiest congratulations- haardik badhaiyaan

to congratulate- badhai dena

for 'good luck' or 'all the best' we say

'shubhkaamnaayein'
ex.
All the best for ur success

aapki saphalta ke liye shubhkaamnayein

i would like to say that even if u say god bless u, everyone will understand

god bless u
it doesnt  have an exact hindi translation
but this can be said- 
bhagwaan aapko ashish dein
bhagwaan aap par kripa banaye rakhen

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