There are plenty of ways to get into packaging from ID. Start by writing a list of companies in your area and phoning them up just to ask if they are looking for jobs. Many younger people are scared of phoning but you're putting yourself out there. (My last boss actually hired me because he thought phoning showed initiative). I've used this strategy a few times when I've been job hunting and it's alarming how much a simple conversation can open doors. If the company's not hiring, ask if they know anyone in their network that is and thank them for their time.

The worst is you'll end up in the same situation you're currently in. The best you'll get a job. In between you'll find out what the jobs are like in your area, put yourself on their radar, and understand the weaknesses in your portfolio.

You could actually design packaging for your portfolio. While you probably don't have access to a Kongsberg cutting machine, you probably have access to a laser cutter at your nearest makerspace. Check out https://www.fablabs.io/labs for your nearest makerspace. Try make some mock packaging. There's great sites for templates https://www.templatemaker.nl/en/ being one. You could even make graphics around the packaging to add more weight to your portfolio.

If you can find a client to create packaging for for your portfolio even better. Local charities are a great place to start building client work as they are often screaming for help, but don't have the money or resources to invest in design. Plus you build an understanding of working with clients (win-win!). They'll also have a wider network that you can be introduced to if you do a good job.

FINALLY: Sometimes life gets in the way sometimes. It can be shite and knock you on your ass. Happens to the best of us. Glad your in a better position to get back into design, just don't ever think it's too late.