Morgana is a strong mid-champion, and it is no wonder why it is banned most of the time in ranked queues. Morgana also does not require much of a skill, just hit your Dark Binding and stay away from melee champions range.

You have also a few options, if your enemy team has a lot of squishy champions such as Lux or/and Ashe you can focus more on a burst of your Dark Binding by building a lot of AP. If your enemy team has a lot of tanky champs, or not that many "squishy" champs you should focus on items that give you burn like Liandry's Torment