I do not understand

No matter how much I consider it I do not understand.

J’ai beau y réfléchir, je ne comprends pas.

I do not understand anything.

Je ne comprends rien.

— PK (2014)

I do not understand you.

Je ne te comprends pas.

— Look Who's Back (2015)

I do not understand the exact meaning of this sentence.

Je ne comprends pas le sens exact de cette phrase.

I do not understand everything, but it seems to me interesting.

Je ne comprends pas tout, mais cela me semble intéressant.

I do not understand.

Je ne comprends pas.

— The Last Emperor (1987)

I do not understand what she finds.

Je ne comprends pas ce qu’elle trouve.

— Two Is a Family (2016)

This is a proverb the meaning of which I do not understand.

C’est un proverbe dont je ne comprends pas le sens.

I do not understand her.

Je ne la comprends pas.

Oh, sorry, I do not understand.

Oh, pardon, je ne comprends pas.

— Incendies (2010)