OOC:
Sorry, that was my bad. With your melee weapons, at your level, you get two attacks; one as an action and one as a bonus action. When you make an attack, you roll one d20 (If you have advantage, roll two d20's and take the higher; If you have disadvantage, roll two d20's and take the lower) and then add all the modifiers that apply (Dex or Str and proficiency). If you hit you roll your weapon die (d4-d12, depending on what weapon you're using) then add your all the modifiers that apply (Dex or Str (you do not add this modifier to your bonus attack unless you have the feat that states you do)).
You're not too far off a correct roll: To make things simple, roll everything separate and let the site do the adding. You already rolled to hit for your first attack and after adding your modifiers, you got a 22 to hit (which definitely hits) so roll your damage which is 1d6+4.
Then roll to hit for your bonus action: 1d20+6, 1d20+6, 1d6.
