You bought that on purpose? Oh well, we all made mistakes as a beginner!
It's not an Uno. It has the same shape/form factor as an Uno, but other than that is basically the same as the Wemos Mini. The idea was that the shape would make the board physically compatible with shields designed for the Uno. In practice, almost no shields were electrically compatible, so the product was a flop. The Wemos Mini outsold it 100 times over.
As you don't plan to use it with a shield, it's form factor is not an advantage to you. In fact it's a disadvantage, because unlike the Mini, it is not breadboard compatible.
Which to use? Well, I suppose we should attempt to use it rather than waste it. Maybe you could get a proto-shield, which is basically a PCB designed to build prototype circuits on, but in the shape of a shield. You could then use that to solder the rest of your circuit on. Being a "dumb" shield, there should be no compatibility problems.