How do I update my safari browser on my mac computer

Just keep your Mac up to date. Safari is part of the OS.

If it were me, I would upgrade or buy a new device. You're several generations behind in OS software. If you bought something new, you could still use your old software on the old device.

I am between a rock and a hard place...My Safari needs updating...can't do that without updating my whole OS system...If I do that I will lose my printer and several programs that won't work with the OS upgrade...??!

Any suggestions?