Aces Low,
with 650hrs you are a beginner. Not many industries like to take people at a beginners level at age 43. If you have the experience, it's a different game.
On the other hand you have the offer-demand rule. When things will finally break open, airlines will be less picky about who to take and age will not be a too big problem.
5 years ago a rabbit with a licence could get a job flying A320, now the airlines can choose out of captains A340 who agree to fly FO A320. So you do not stand a chance.
But many CPL's with a few hundreds of hours have already given up hope, and changed carreers.
If you hang on long enough, it will pay off.