This is my second night that I got my tattoo! The first night i wrapped it. Do i need to wrap it again the second night?

It's up to you
You can wrap it for the first 2 nights - but it must be loosely wrapped!
It's just to catch excess blood/ink

Some artists say it helps it heal but tbh I can't see how - only started doing this after last tattoo, the first bunch of tattoos healed absolutely fine.

you don't need to wrap it and use scent free lotion on it