I don't play plinko very often, but in my experience, betting $0.1 and dropping the ball 10 times in a row most often results in a loss of $0.3-$0.8, which means that to reach a $100 wager you have to be willing to lose $3-$8, which I think is bad
I think you missed a zero, as it’s supposed to be $0.03 and $0.08 for the math to add up.

The RTP for the Plinko game on Yeet is 99%. So, if you wager $100, you are supposed to lose about $1. But that’s only in theory. Still, a $3–$5 loss isn’t that bad, imo.