There are many ways to get into making games.
OP is a beginner and a little intimidated. So giving them an alternative to giant complex SDKs can help them see more options.
You can write a game in any programming language and don’t even need a game engine.
Look at great games like A Dark Room for example.
I wanted to show OP, that they can already make games with skills and tools they have.
job
OP is very far away from making this their job.
staff of 50
There are tons of indie games with teams smaller than five.
Of course it takes more to get a job than designing a small game yourself. I never said anything like that.
This is about learning, not making money.
Game design skills are good to have regardless of you specialize in something else later. Even as a graphics dev, or sound designer it will make your work and communication mich better.