*sigh*
At the buttom right corner is a arrow. Clicking on it expands your combat log. Here you can see your dice rolls. See if advantage or disadvantage was at play or if damage was maybe reduced by Resistance.
Thats the third time today that I have to bring it up -_-
You are either unlucky or had disadvantage of some kind. Check what the issue is first before you comlain that you keep missing.
