I know what you are feeling. I worked ramp for UA for 4 years. I do "dispatch" at a 91/135 carrier. I thought maybe I could go back to UA and do crew scheduling as a internal way into DX. They didn't want me for crew scheduling, even though my former manager recommended me for rehire. Patience is key. I'm guilty of feeling uneasy about ever getting to a major. It'll happen, but we all have to put in our time to get there. The pandemic led me to the 135 world and it's hard to get out of.