Listen it’s simply not true that you need 1000’s of hours grinding to get end gear for a smiter paladin, that does the Ubers easy.
Do this: first get a blizzard sorc to hell act 3. Do Mephisto runs to gear her up. Then do cow runs to find mid/high runes. And make grief, coh etc.
Respec the sorc to a meteorb sorc to be able to make key-runs. Do the Ubers.
It took me around 150 hours playtime to make the first ubers-run with the smiter.
And watch YouTube videos alongside to work smarter in the game. Use this forum to trade and ask people questions or for help.