Verrrrrrry vague bro. Who knows what the problem with your care is. There is no way to say what we do. Be more specific with your question: mention a specific specifies, how you’re taking care of them, a specific problem with that species, etc.
I think this is very true! The real answer is to correct what is wrong. That's kind of a case by case basis type thing.
The key is learn as much as you possibly can about each species you care for and when you feel you've made mistakes don't be afraid or embarrassed to come here and seek specific help. With all the keepers here you can bet whatever mistakes you make have been made by a hundred of us as well and you will find people that know exactly what to do.
I remember not too long ago a small Crematogaster colony I have was down to 11 workers and I was bummed. I made the comment in another thread about it saying I didn't understand what I was doing wrong. Antdrew wrote back to give them more food, they eat a lot. Sure enough I now have more than 100 workers. I never realized such tiny ants ate so much!