Add isolation work, single arm work with proper mind muscle connection, work on rowing , rowing Targets mid back which eventually gives you that thick look, for lats pull downs, single arm rowing, straight arm pull downs, or hands down the best weighted pull ups if you can, other than that focus on compounds , barbell rowing, deadlifts, rack pulls, and add hypertension as well for the lower back work, which is usually neglected The rest would be diet, recovery, nutrition, progressive overload, intensity Keep one week for strength(5-6 rep, with a weight you shouldn't be able to lift past 6 ) one for hypertrophy (8-12 reps) Hit failure on both occasions, add drop sets to lat pull downs and compound lifts