Diablo 2 Resurrected is coming soon, D2 Resurrected classes are the soul of the game, the right build can help you dominate the demonic hordes, even if you're playing on nightmare.
Here xtmmo recommend the Druid, Sorceress, or Barbarian as your starter class. The Druid is a solid all-around class that gives you the tools necessary for understanding how combat works. Sorceress is a powerhouse that doesn't require too much thought to maintain, while the Barbarian is a good intermediate class if you want to tinker with something slightly more complex.
Of course, you can buy cheap d2 resurrected gold on xtmmo.net, full stock, fast delivery.