One is target your local job market for anything that will still exist post-pandemic. The second is target one of those online developer mills like TopTal, BiersDev, and that means implementing the 'mother of all demo apps' repeatedly from spec until you have a fully tested and optimized app ready for deployment in whatever language you think you will most likely find a job for (javascript/expressJS, React, etc). See https://n0x400.1mb.site/ for the MIT webdev crashcourse
One is target your local job market for anything that will still exist post-pandemic. The second is target one of those online developer mills like TopTal, BiersDev, and that means implementing the 'mother of all demo apps' repeatedly from spec until you have a fully tested and optimized app ready for deployment in whatever language you think you will most likely find a job for (javascript/expressJS, React, etc). See https://n0x400.1mb.site/ for the MIT webdev crashcourse