If you are interested in other games too, I can very much recommend Steel Division 2, it's the WW2 franchise of Eugen Systems, and also their latest finished game. It's just a new game really, JUST different enough to not be able to call it a sequel, so asking if it's a must try is like asking whether Civ 5 is a must try if you like Civ 6 (or whatever turn based stuff you play). Since WARNO is newer, it also has some QoL features, like giving orders during deployment, new unit commands like 'unload at position', smart orders, line of sight tool and other goodies, which help your beginner experience. WARNO is also in early access, so things will change, while wargame is a fully finished game. This has various impacts on the game, but as a new player it won't matter to you, it's just what you get used to.

Gameplaywise, the largest difference is that in Wargame you are playing with units divided into nations and coalitions, but in WARNO they are divided into historical divisions in the 80s, so the variety of units you have access to in each battle is a bit more limited, which some people aren't a fan of. WARNO is a bit of a Wargame reboot, just not fully. I think the biggest real difference is literally the graphics and the system requirements. It's from the same dev, Wargame is the old franchise, WARNO is their new game.

Wargame red dragon german deck