Snot bubbles & sneezing

[Laydeau]

I'm glad you made adjustments to your ventilation, that may help.
I would watch the worst one for more signs of bubbles in the eyes, facial swelling or worsening of symptoms.
Since the others are sneezing a bit too, it's hard to know what you are dealing with. Getting some swabs analyzed would be helpful if that's something you want to do. You can call your Texas State Lab and ask how to send in samples or another option is to use an independent lab like Zoologix.

Mycoplasma symptoms can be treated with antibiotics like Tylosin can you can order online.

I now have multiple in different quarantines. One being in the house. She's having a hard time breathing. I can hear every breath she takes and will sometimes get really loud. Sounds like a scream. Im contacting people about samples tomorrow and getting medicine. I'm definitely stressing out now. Thank you SO MUCH for your help!!!

 

[Eggcessive]

This place does a respiratory panel on one bird for about $90:
https://www.zoologix.com/avian/Datasheets/PoultryRespiratoryPanel.htm
But your state lab is probably much less expensive, and your vet might help get several tested at once. If you lose a bird, and can send it in for a necropsy, that be even less than zoologix for one test.

There is no need to quarantine sick birds from each other. I would keep the sick ones together. Actually, they have all been exposed, so if it is difficult to separate any, it might be best to keep them together. I would order the Tylan (tylosin) from jedds. It can be given in the water 1 tsp per gallon for 5 days. They only have 2 in stock, so I would order now. https://www.jedds.com/shop/tylan-soluble-100-g/