I don´t understand a phrase verb

Hi, Elish speakers friends! Can we help me with this text?:
DEPP: I'd moved to Los Angeles in 1983 and was living here playing -- you know, playing music. And we did a couple of good gigs. You know, the band and stuff. And we went on the road for a little bit. And that was all fine. But, I mean, in terms of making a living, it was pretty straight -- you know pretty close to the bone there.

Well guys, do you know what's means 'pretty straigh' in this text? And also what's means the phrase verb 'pretty to bone there'? What's that Mrs. Deep allude to say 'pretty to bone there'?

bone means hueso, but I don´t think that meaning here is to be a bone, but I thinks that he allude a meaning figurate. Can you explain me their meaning? Thanks a lot for everyone.