Translation:We are going to need much more information.
Uh sorry, that is a completely different issue ("bez mnoha lidí" "without many people", "mnoha lidem" "to many people")
Here mnohem is a comparative, it is the same as o mnoho (literally "by much").
mnohem více=much more
mnohem lepší=much better (adjective)
mnohem lépe=much better (adverb)