I'm clueless lol being a FTM is hard!

My 5 month old HATES chewing on teething toys. She hates silicone she hates plastic. She just constantly chews either her hand or mine. If i have a blanket near her she will grab that to chew on as well. I think she will cut a tooth soon from what I can feel when she bites me. But I am not sure of what to do if she wont use her teething toys. She also refuses a pacifier. I'm also unsure of how much spit up is normal for a baby lol. She has always been spitting up a lot and the dr prescribed Zantac saying it was acid reflux. But then we moved and her new doctor suggested we switch formulas. First we tried rice cereal in her bottles and it didnt help any so we tried Enfamil AR for a while and that didnt work either. Now we are on Soy formula but she still seems to be spitting up so much. We have already changed her outfit 3 times today because of her being drenched in spit up. I dont think she is over eating. She will usually take 4-6 oz every 3-4 hours. She cries a lot and I can hardly ever put her down. She also gets frustrated at her toys all the time. She isnt interested in things like stuffed animals or rattles. She is obsessed with toys that light up or toys that you have to interact with but she cant figure them out and cries within 5 minutes. So I sit there pressing buttons and stuff until she is overly frustrated and just wants to be held again. She also refuses to do tummy time. She just instantly rolls to her back and never rolls to her tummy, though she does roll side to side. She also doesnt nap well. She will have one or two 20 minute naps a day and thats it. Shes cute but man is she difficult, exhausting, and i just have absolutely no clue what i am doing 😆 Halllppp lol.