This exactly. I left school with very basic understanding of Rhino and nothing else. It wasn’t until hitting the job market that I realised that it was either Solidworks or Alias that most firms were after, mainly SW.
So I took it upon myself to learn how to use Solidworks in my free time by watching YouTube tutorials and getting on CADJunkie. The first thing I modelled was a 1911 Pistol and then moved up to more complex shapes. My first ‘real’ internship I was able to hit the ground running and knew enough that the more senior designers could just help me when needed.
As mentioned I’d do side projects and treat it like going to evening classes. Set aside a couple of hours each night and a Sunday afternoon + evening to work on new self identified projects that demonstrate all the skills that you feel are missing and hindering your job search.