I believe this is not the right section to post this but I will get response here faster.
I just got a Boer bowl breed. But the problem is she doesn't eat other food. Only the booster. Or is there anything I should do .. and the dog is getting Slimer. Yesterday I bought rice and chicken for her dinner. Still mixed the booster but she only ate the booster left the rice smh. That reminds the cut her Tails I don't know if that's what is hurting her

First, make sure that the dog is not sick, you can consult a vet for that. Lack of appetite can be as a result of illness. If you are sure that the dog is healthy then
1. Don't worry about it eating only booster.
2. Feed it without booster (even if you know its not going to eat) why? Because you're are already training your dog consciously or unconsciously. I have had this situation several times and I can tell you to trust me and you'll get the result you require.
How To GO ABOUT IT
1. Feed it without booster and let it also have water around(most likely it won't eat but that is the point) leave it with the food for 24 hours(most likely the food begins to ferment at this point).
2. Remove the food that is beginning to spoil and leave the dog for some hours then serve a fresh meal without booster (this is to let the dog know that it can choose what it wants to eat.
3. Keep repeating the process and trust me the survival instincts in the dog kicks in (eating to survive and not for luxury)
4. Just make sure the food you serve is rich without booster.
5. Don't be quick to resume giving it booster.
6. When the dog stops selecting what to eat and you are comfortable with the results then you can resume giving it booster but this time make sure it is ground and mixed with the food that it cannot be picked individuallly.
I have been there several times but this is how I was able to let my dogs know whoss boss when it comes to feeding. Don't eat ist fine by me I'll serve you the same thing again and again until u get whos boss. Hope this helps