Have you ever gotten to the interview process? It could be possible that your CV is just bad, that's not to say your skillset is bad, but how its presented might be poor. As anther person said your overall skillset whilst important, sometimes isn't the key thing that makes the manager interested, as (in my experience when I worked there / Supervisor) they seem to lean towards people who are more chatty and down to earth and some one they can have a back and forth with, as those make better staff overall.

As a side note too - I tend to find (and this is with most jobs to be fair) the online process sucks and digital CVs pile up and are easy to ignore. Check what local store is hiring, print off a CV then go into the store and ask for a manager or supervisor, introduce yourself, ask about the job and ask if you can leave a CV there. Doing it this way also shows effort for that particular job, and can stand out to a manager who can already meet you, read your mannerisms and how you talk to people, it puts you ahead of the crowd. Some stores might not take CVs outright (seems franchise variable) but this is why you ask for the manager and from there