Okay, yes, I can help.
First up, you will need to bulk, and that means eat at a surplus. Figure out how long you can bulk - if you can afford three months, that would help, a lot.
Second: you might do well to incorporate block training for six weeks, and I can help you with that. How about we do blocks with lats and delts - build up that width?
Third: your exercise selection. I'd ditch anything wider than shoulder, because it takes too much emphasis off the lat and places it on the rotator cuff. You'll grow better lats from shoulder-width or narrower.
I'd ditch the seated rows, and incorporate heavy, "sloppy" t-bars instead. Give them momentum, you'll grow better.
Also, start doing one-arm dumbbell rows, and a favourite of mine, one arm at a time lat pulldowns. If you happen to have two cable stacks OR a hammerstrength lat pulldown, do them alternating arms like you're crawling up a wall. I call these spidermans.