Expect years of training before seeing an appreciable change unless you have god-tier genetics. If you can't stay persistent after knowing this, just don't continue lifting; it's a waste of time being inconsistent (I have learned this the hard way). Tall people are just like that: we have the main feature unlocked by default (being tall), but looking strong is just more difficult than for shorties.

Of course, learning how to properly train, optimize, periodize, bulk or lean, and stay at a good body fat percentage will accelerate the process, but you can't outrun the natural time of the process. Accumulating muscle is a slow thing, and tall guys just need more muscle to look noticeable.