Help me fix the noise from my bike (bottom bracket?)

I'm trying to revive my Peugeot city bike. In the video, you can hear two distinct noises:

• ticking noise – still there. is it bottom bracket related? cant seem to be anything else to me. only appears, if im cycling with certain force
• squeaking noise – solved already by changing the chain+cassette and lubing the quick release

I think I want to try to change the crank, bottom bracket and the chain ring. The latter I should change anyway due to the new chain and 2nd ring skipping badly. I would like to actually just convert to 1by if possible. Can you help me choose the parts?

Here are additional photos of the crank and bottom bracket: https://imgur.com/a/Pid6hCH