Do you live for a job or have a job to live?

Also IQ be damned, it's not even an accurate measurement in the first place and honestly even if someone is a bit of an idiot (unlikely for you since you were studying robotics) there is still a lot a person can do if they are dumb. I've known several idiots who do well.

But it seems to me your primary concerns are usefulness to society and making money. One can be useful in any number of ways, mentor people, be involved in organizations and communities, hell just showing up goes a long way. As for making money I'll try to summarize what I know.

So how does one make money? I have a few ideas that are in no ways all encompassing and is just a rough outline.
1. a standard job, getting paid for time and knowledge
2. providing some kind of service for which people pay you
3. selling some kind of object, which is more or less a service, but let's list product separately.

For jobs, we have the options of first leveraging the current job to gain skills and outgrow the current position, an example would be while working at a hotel taking the time to learn how to do every related job there, likely including higher paying jobs like accounting, management, sales or on finding something that annoys you, you could pivot it into going solo and selling the solution to that annoyance to your former employer and other similar companies. Any of these could increase income options, you could also be upskilling on the side while working, working on a passion project at night, or running any kind of side hustle.

For providing services, this could range from any kind of skill, solution, expertise that other people would pay for. This could range from entertainment, education, consulting, freelancing, managing a team (like for example if you started a cleaning business and managed a team of cleaners who do the work but you do the sales and management etc). Hell this could be software even, make an app that tells horoscopes algorithmically charge people a few bucks for it or even make it subscription based to get the daily if they pay $1 a month, what people will pay for would surprise you. I once heard about a guy who made a website that auto generates crosswords for teachers, charges them a dollar each, makes enough to live off it.

Lastly for products, this could range from digital goods like selling downloadable coloring books on etsy to making handcrafted woodwork in the garage or even making yoru own retro electonric chips, so long as it fills a need that people are willing to pay for. Keep in mind that often what people pay for is more than just the thing or the solution it provides, if you are in the middle of a desert and someone is selling ice cold water their making it convenient is something you pay more for, making it cold in a hard to keep cold place is something you pay more for, maybe it's someone you trust which you would pay more for. What about if you rebranded cereal boxes like AirBNB did when they started, it was a joke box with boring cereal inside, but people paid for the joke, for the entertainment of it. What about if you made a comic, or a game or wrote a book, often people pay for those to support their favorite artist (in fact making a personal connection is the artist's best tool to fight piracy). Also, wealth is created when things are processed or created, for example the difference between a pile of lumber, a log and a wooden chair, gathering the wood initially provides value, curing it and turning it into lumber provides value, turning it into a chair provides value, selling the chair in the right location provides value, making it easy to ship or assemble provides value, making the assembly instructions easy to understand provides value, even methods of customization like wood stains provide value. You know supply chains a bit, so you should get it, any point of the chain or process has a point of value providing, people usually pay for that, improve a part of that, and you gain not just money but are useful to others.

Go look up the article about 1000 true fans, look around on indiehackers, and most importantly figure out what you want to do and do that. Often people who become experts of nonsense things become valuable because they are an expert of that thing, just have to find where it intersects with someone wanting to pay you, figure out how to leverage it.