What Do You Think I Should Do?

My wife sides always with my daughter from my previous marriage. She says she feels bad for her because she is from broken home and that her mom is not a good role model for her ‘cause she has been brining different guys around her since age 2yr. I divorced my ex 10yr a go when our daughter was 3yr ‘cause I was no longer in love with her and ‘cause she was horrible wife. My ex has custody of our daughter I have her every weekend. My wife wants me to get custody but I do not want too ‘cause it may create drama for my daughter and also, I’m not good deal with my daughter and I don want have her 100%. I’m a good dad to her but just do not want be responsible of her 24/7 ‘cause she does not listen.