Babys not eating food

My baby won't eat purees. I've tried giving her scrambled eggs. She liked them a couple days now she won't eat them at all. She only wants the puff snacks or she likes s little strong cheese. I'm not sure what to do. I bought her the stage 3 gerbers with the chunks and she didn't like it either. I've been trying all week but she don't want anything it's like she's going backwards, not sure what to do