If we are joining on wagered contest then it's useless to have a multiple account since we can't win if we put a split deposit in each account, but in some other contest which doesn't need to place anything then there's an advantage of it especially if we are on lottery type of contest.
But maybe as you said as for the safety of our funds we should focus on 1 account by joining on different kind of contest to avoid any big issues.
So I think if we often participate in gambling contests then one account is better than the many to mobilize. This will be a big problem if caught with multiple accounts, still the winnings will definitely continue to exist in us, we don't need to be ambitious by using a lot. account I think its usefulness is not that important in its winning.
But in this kind of thing, I will definitely use it but I will avoid it as much as possible, see now that many gambling platforms are holding contests, we need to pay attention to even one account and the assets will be even safer.