I've been fortunate enough to make a living as designer, drafter, modeller and general CAD jockey in both fulltime employment and freelance for the past 20+ years. I started with a shareware 3D program in the early '90s (it was called ProtoCAD, 16-bit CAD, MS-DOS, a lightweight clone of the AC version of the time. Hand-tracing dot matrix fanfold paper printouts before there was a bureau with a plotter to deliver quality sheet drawings...) got into a company that used AutoCAD on the strength of that through the last MS-DOS versions and early Windows versions of AC, was doing a night school CAD course (it was notionally generalist "CAD", but was taught on AC because that was most common) when IMSI was trying to get TC into the college while selling it on magazine CDs too, and I started working with TC then. Since then I've also worked commercially with Alibre, PunchCAD and FreeCAD, and done a little with subdivision, mesh-based and facet-based modellers. My best tip is don't be a program specialist, be a generalist. I love TC because its interface makes the most sense visually and spatially to me, and its as powerful as most other CAD apps, more so in many ways. But outlier capabilities are hardly needed in CAD. Most CAD apps are at a similar functional level of capability and usability, but with different philosophies and interfaces. Tools aren't identified with the same name, but if you can recognise them by what they do rather than what they're called, you can do the same work with different apps. My professional portfolio has examples of the same sophisticated models built in versions of TC, PunchCAD, Alibre/Geomagic, even FreeCAD. That catches employers' eyes, and I've been given the opportunity to move sideways within companies instead of suffering redundancy or layoff because it's shown adaptability, and I've also had companies come back to me for specialist contract CAD work after they've laid me off, so I guess I've been part of the gig economy movement since long before it was called that. I regard myself as a CAD specialist, not a program specialist, and being able to demonstrate that to employers puts me in the frame for more gigs. Right now I'm on board with a small shop as their go-to modeller to feed files to their 3D printer, which I get the use of when they don't require it. They don't care what app I use to build the models, and the CAD work is my property, only the end result is theirs.
Even if the loss of that job denies you access to TC now, keep learning with open-source and free modelling and CAD apps like Blender and FreeCAD. Build a portfolio of models in those apps, with supporting paper drawings and renders that show off what you've learned, and they'll carry even more weight done in those apps. They're a direct reference to employers and contractors who could use you, and once you've got a foot in the door, good quality work will give them confidence in you, and in my experience they'll often refer other work to you, or subcontract to it themselves, then refer it to you and take a cut. Be an opportunist. Try to stay upbeat and, if you want to work with CAD, build on what you've already learned, don't write it off.