We see a lot of good engagement on mobile with news feed placement (local lead gen). You can try auto at first and then see what performs best. FB will also optimize for best placements/campaign objective if you go auto.
I have a Good Daily Budget. After running my Ad for a whole day, I can see a huge no. of clicks on my ad but, Only few landing page views. I am so worried. What could be the possible reasons? As, clicks on the Banner, Button etc should exactly lead you to the landing page? right? So, why there is a huge difference?