i cannot create a main menu for my game

So I am entirely new to unity, and I thought I would take an existing game and heavily edit it to make it unique. So I used the 3d tank template and made the map bigger, adding four-player support and making the game top down. However, I want to make the main menu. My attempts at this haven’t been successful as either thing from the asset store don’t show up or don’t function at all. I tried this asset here, and the menu shows up but I cannot interact with it, and I can still control the tanks while the menu is still on the screen. Eventually, I want to add a way to change maps as well as the time of day.

Hi
You can find a lot of easy to follow tutorials on youtube covering that topic. There are several ways to create main menu. One of them is that you can make new Scene and inside that scene create Menu with button to open your game scene.