There's a lot of banks in Europe that have Cobol and M4 legacy systems which need maintenance. Banks tend to pay well and there's few young people competing for these boring jobs.

I'd say double down on the fact that you have experience with old technology. Then find a good headhunter / recruitment firm to work with you. If you're willing to start out as an external contractor, they might get you started working without any interview at all.

Also, do some projects just for fun. Nothing screams "fake" like a self-proclaimed experienced coder with no battle stories.