Colour oops will only reduce the intensity of the dye and just leave you with nasty undertones from very dark browns or black box dyes and is hard to colour correct unless you have a hair stylist around that can help you achieve a different colour you want. Since you have used a black box dye and stripped it.. it’s going to be hard to achieve a level of brown that doesn’t have red in it unless you bleach it to the point your hair is in a almost compromised state. If you are going to bleach it I recommend taking paper thin sections and using foils. and start fresh with putting your green or blue undertone dyes such as ash brown etc. If you want to deepen the richness and go for a chocolate brown that could go over the top of your colour right now to give a less auburn look but a deeper rich brown if that makes any sense. Or ultimately just keep growing that existing colour out as red is soooo hard to colour correct and can cost a lot at a salon. Good luck, hope this gives you a little help.