If the minimum bet in the crash game is too big for you, better to try the plinko and dice party as there is no minimum bet to be eligible to participate but I think there is a default min bet for duelbits in house games which is 0.1$ if I remember it correctly. You may check it yourself ofc, its been quite a while I'm not playing in duelbits so I'm not sure about the default min bet of their in house games. Well, good luck if you are going to try your luck in one of the current on going contest.
Just checked myself and the minimum bet is indeed 0.1$. I have never been a big fan of Plinko as I never tend to get lucky on that game but had very recently a lot of luck on another site where I hit multiple 41x in a very short amount of time. A 41x multiplier will not be enough to finish in the top 2 of the ongoing contest.
I have also not tried it many times but only few times and not enjoyed it too much so not wagered too much on Plinko but say you have hit multiplier of 41x but for me I was not lucky on that particular one.But you can still try your luck with the ongoing contest and see if you can manage to be on winning list.