I’ve been playing a lot of beginners lately, for whatever reason. I find that most beginners fall to a simple strategy.
The reason why beginners lose easily is because they keep attacking and fail to defend, which means that they cannot adapt to any change. If you look at the good openings, the one thing they have in common is that they serve a defensive function. Putting a fence right in front of your opponent at the start can seem like a good move but it really isn’t. Here is an example, with purple, the beginner, going downwards:
Purple can easily be corralled towards the closed side and turned around, and is running out of good moves fast.
If there’s one thing I would say to beginners, it’s to be patient and play more defensively early on in the game. It’s very easy to deflect the “Fool’s Mate” using the Gap. And that gives you a lot more options down the line, as well.