What should I use from given options to power a raspberry pi?
The L298N module doesn't say how much current it can supply at 5V, but based on the components visible on the board, I would guess that it's no more than 1A, probably less. The RPi requires up to 2A at times.

You need to get a beefier regulator (step-down module) that can handle the peak demands of the RPi.