My first two 10+1 rolls were really really meh.
first roll; 1 gold (Poinsettia, freaking christmas loli)
second roll: 0 golds
BUT. You get random premium tickets (which is the same as doing a single roll) from daily quests. and I got 2! golds out of those ~8 tickets.
My seventh login bonus 5*+ ticket gave me a rainbow..
And now I have done 4 10+1 pulls in 9 days time..
I guess what I'm trying to say is if your first two pulls are really bad, stick around until you get the ticket from seventh login day and see if you hit the jackpot.
I wanted to quit after my first two pulls as well, but when I accidently pulled 5* Anemone from a yolo ticket everything changed.
Welcome to DMM, if you got any questions ask away
Edit:
Oh you lucky bastard, you got heavenly bamboo right off the bat!
Grats man, that girl is really high on my wish list.