I have a passion for badminton. I can play all day without getting bored, but I can't make a living with this.
Many pp with degrees in Bio, Chem, and etc end up doing IT because they can land a job. Most of the time it's not about what you love, but what job you can get and earn enough for a living.
I've worked with people that came to programming from other fields. Astronomy, Chem, etc.
Some good, some absolutely clueless.
The clueless ones did not last long.
For those that can do, fine.
If you can't hack a Network+ cert,
there is absolutely nothing wrong with that.
It is simply not your thing.
I'm a programmer.
A few years ago, a team lead proclaimed that she could get anyone even vaguely IT related to be a good programmer.
I and a couple of others said "Sorry, you're wrong".
After a couple of years, she realized her mistake.
I can also build and manage large networks. Even though I've never bothered with Network+
I can also diagnose and fix fighter jets.
I can also do an engine swap in my truck.
I probably cannot be a good nurse.
I probably couldn't be a good salesman.
I know I would make a lousy landscaper.
Not being good at networks is not a failing, it is simply something you may not be good at.
You need to find what YOU are good at, and do that.