you 100% need to follow a build guide on this game my dude. I know, you're probably thinking to yourself "nah, I know what to do".... you don't. This game is immense. the gems are wild. builds are all over the place. certain items make or break builds. Need to figure out what you want to build, then make a character.
If you're going templar and just starting out, a totem build would be easy and super user friendly. although it can be a little boring. I honestly cannot think of any other templar build off the top of my head.