It sounds like on a lot of the check rides you're not even taking the blame. If you get an interview, don't make excuses. Own up to it and give an example of what you learned from each one. Right now, the top regionals are being more selective or not even hiring right now so your best bet is one of the lower tier ones.
Also study hard. Everything happens faster in a jet, so be prepared. You'll be taking 121 rides for the rest of your career so make sure you are up to snuff. If you add 121 failures with your record you might not get another job.
Best of luck