Providing your Hammer device is newer or the same as the HAMMER Explorer PRO, your phone should be compatible with an eSIM.
If you would like to check this, you can do so by following these steps:
1. Go into Settings.
2. Scroll down until you see the option "About phone"
3. Click on the "About phone" option.
4. Once in this section you can see what the Device name is. As you can see from the photo below, this device is the Hammer Blade 3.