manual CPC without enhanced cpc - so less clicks

If enable enhanced cpc , i can get more clicks, but it's very more expensive.

Do you enable enhaced cpc when choose manual cpc?

Enhanced CPC needs some conversion data to be effective.

I would recommend running your keywords via manual CPC for a couple of weeks or however long it takes to get some data.

Then move to ECPC when you have the conversions to optimise for.