I currently do full stack (Angular/.NET Core).
Not sure where you're getting the "saturated market makes it hard to get an entry job" from. No one is coming out of school with full stack knowledge unless they have their own portfolio which makes it very easy to stand out in interviews. School curriculum hasn't caught up to the new, commonly used tech stacks.
Cyber security is an incredibly complex profession. Most "cyber security" roles are really just glorified IT positions. Actual cyber security requires not only a degree but an in depth knowledge of systems (more often than not UNIX) as well as a fuck ton of math. If you can get the certs you're basically guaranteed a position but enjoy getting woken up at 3 AM on a Saturday to drive on site for shit pay.
I always recommend people that want to get into an IT profession (and even ones who are already in it) get into DevOps.
