No quick fix....5 busts out of 5 checkrides (PVT, Inst, COMM, Multi, CFI) does not bode well at all to any potential employer, regardless of the circumstances.
You need time, experience, and most importantly training records that will demonstrate your failures are behind you.....several years, a couple type ratings, recurrent training events, line checks, etc with no failures will help quite a bit. To get this, you’re gonna have to take something other guys in your place might not leap at, but you need to enthusiastically take it.
When you say 5 busts, are all of them actual Pink Slips from an examiner, or are we talking stage-checks and such?
Finally, do not get any speeding tickets, DUIs, etc.......adding anything to the file of busts will torpedo an already difficult career path. Do not bend metal either....anything that supports the conclusion an airline should look somewhere else for a pilot when they see 5 busts is very bad.