Welcome to chef talk!! I agree that it’s more about technique than a recipe. Brisket, pork butt, ribs, roast etc.. are tough tough cuts, so long and slow cooking is best for breaking down connective tissue. I wouldn’t go over 225 for brisket and make sure to put it fat side up on your smoker. You can use a Texas crutch as well which is wrapping it in plastic wrap ( make sure it’s thick like from a restaurant supply store) and foil, or red butcher paper after about 6 hours on the smoker. Traditional seasoning for brisket in Tx ( mostly East Tx) is just salt and pepper and lots of each. I generally go 12-14 hours on a 10-12lb brisket, also spraying with apple cider vinegar about halfway through and at the end does wonders for flavor and moisture retention. Another good tip is DO NOT peek at it let it cook at least 10 hours if not doing a crutch then check it. If your looking your not cooking. Have fun!!!