I'd imagine it's because there are already more than enough qualified applicants with prior experience that have already ETS'ed or are available to work "immediately" (meaning not tied up with remaining service obligations/requirements.) It was the same for me back in the prior experience bid that came out before this one (March-ish 2018 I believe) I got out in October of last year and started my Terminal leave in August 2018. Still never got a TOL, but people who had more time remaining in service got TOL's (granted they got rescinded) but they still received them. I think its honestly just the luck of the draw. Contact those that have gotten TOL's/CIL's and ask to see their resumes. Also, don't be afraid to hit up every FCT for a position. Sometimes it can be a great bridge from military to civilian ATC, not only to remain proficient but to build experience and connections.