Pal, I know this gun. It's good for small game but it breaks easily. Get this one instead: https://www.amazon.com/Pellet-Rifle-Caliber-4-5mm-Underlever/dp/B09GNWDWMS

It's from the same brand, it's cheap and it can kill even groundhogs. Get it on the .22 caliber if your country allow it. I have this one as my backup airgun and I hunted a lot of rabbits with it. Just be careful with your fingers, ok? The B3 chinese airgun is a powerful and cheap platform but it does have its flaws, even with the newest safety devices. But if you exercise caution, you will have a good airgun for many years.