I've been playing around with Arduino and esp for ~10yrs, just googling, copying around code snippets, and reading compiler fail logs.
I'm fed up with my lack of ability to understand larger projects and more in depth programming (pointers, objects, etc)
I'm mostly focused on embedded software (iot, iiot, etc.) So probably looking at staying with C,C++ or rust?
I'm fine with investing some $$, but don't particularly feel I want to spend more that $1k at the moment to fix my ignorance.
What bootcamps would you suggest?
I didn't even realize that had Bootcamps for that, but they tend to be a waste of money anyway.
Try using micropython or circuitpython since it will be a lot easier. It runs on small embedded boards like the raspberry pi pico. But, you are better off getting started on a bigger computer with a better dev environment than an embedded gizmo would have. Also, study the source code of programs that interest you. If it gets confusing, run it under a debugger and single step it so you can watch it's execution step by step.
OOP is overrated so don't worry about it until you're more comfortable with other approaches.