I bleached my roots too light?

My hair is naturally strawberry blonde but I've been bleaching it a shade lighter for the past year. I touched up the roots today but they've come out a bit too light. I think I'm going to buy a dye that's the same colour as the rest of my hair tomorrow and dye the roots so that they're the same colour as the rest of my hair. I don't want this to turn out worse than it already is so do you have any tips or instructions or is there a different method I should use? Thanks.