If you can spend an entire career, from school to retirement, on flying only - you've either done something right to deserve it or you've been plain lucky. For most pilots it simply doesn't work this way. Your first bout with unemployment might not be your last one. Even when it's all looking nice and stable, another blow might be just around the corner. Think COVID - did anyone expect such a crisis back in January 2020? People were looking forward to a prosperous year, many were amid a job change for something better they had been working hard towards, many were expecting an upgrade - and look what happened. The same goes for 9/11 and pretty much every other crisis in the history of aviation. It was always carnage in a matter of weeks, taking a few years to recover from.
So, if you can afford it, your time waiting for a flying job would be best used developing a second skill set to fall back on in case something crazy happens once again (and it most probably will). Whether you'll learn mining, coding or accounting is up to you. The important bit is that it will allow you a better alternative to the call centre - and will certainly put you in a better position than those many who never learned a second profession, hoping that things would never go sideways for them in aviation.