A logic analyser (Saleae Logic, etc.), a HW debugger (J-Link for Arm/RISC-V), a good quality multimeter (spend the extra money here, don't get the $10-20 crap DMM off Amazon), and an entry level 200 MHz oscilloscope (Rigol, etc.) should set you back somewhere from $1-1.5K I guess, but that will give you 90% of what you'll need to debug most embedded MCUs (Arm Cortex M, etc., not Embedded Linux or Arm Cortex A which is a WHOLE other world).
That may or may not be a large amount of money for someone, but those tools can last you a good part of your career for the price of a low/mid range development laptop.
That may or may not be a large amount of money for someone, but those tools can last you a good part of your career for the price of a low/mid range development laptop.