Having a dozen LORs from your "bros" isn't gonna fix a lackluster resume (except in limited circumstances at a handful of carriers). Just a suggestion - build your resume and get involved with aviation extra-curricular activities. Volunteer to do ALPA safety work or special projects for your current carrier. Not only will you actually learn something useful, but you may be able to network with well respected decision makers at your carrier of choice.

I got on at my carrier of choice with zero internal recommendations. Fwiw.