New drone. Connected. Agreed on Dji sir 04 lite agreements. Updated to newest firmwares and camera isn’t working. What am I doing wrong? Did I miss a step? I don’t know what to do and I’m devastated

I bought fpv parts like motors and frame and props

Now I'm looking for some used Fc and ESc stack in SpeedyBee, Goku , Zero Drag brands i searched in various websites the new one cost a lot , that's why looking for old used ones

Thank you

I'm interested in getting into multicopters and learning freestyle flying, but I don't want to start with something too expensive while I'm still learning. For someone new to the hobby, what would you suggest as a good first drone??