How to prevent users to wonder to other games

I'm currently thinking about if i should put only reward ads or should i add also normal video ad with a device timer of 1 day change what do you guys think?
my last game was firstly made with no ads on a different multi platform then i rebuild it with unity and reupload it with normal video ads and it didn't get close to the old version "organic downloads"(that could also be by it 29mb size compared to the first one 4.9mb) and my effort for publishing the new version were a lot more time consuming then the first one.
what do you think guys? reward ads or reward + normal video ads?