With everything in space the answer is complicated. Yes they have sent humans to space to fix or capture satellites but it's usually cheaper to build and launch a new one than fix it in orbit. Though that's not always the case.
For example the Hubble Space Telescope was serviced 5 times in space (1993/4, 1997, 1999, 2002, and 2009). Another time Space Shuttle Discovery recovered two Canadian communications satellites because they had a faulty kick stage that did get them into the right orbit. They were then sold and relaunched. To my knowledge the Space Shuttle was the only vehicle that had the ability to capture and repair/recover satellites in orbit.
I'll try to help with your confusion a little with how many people are launched to space each year. Currently as of writing this there are only two rockets in the world capable of launches humans into Space. Russia's Soyuz and China's Shenzhou. India is currently in development of human spaceflight program and NASA currently rents seats on the Soyuz rocket (for about $81 million per seat) to send it's Astronauts to the International Space Station (ISS). That will change when Boeing's and SpaceX's crew programs come online with in the next year. Usually there are 4 Soyuz launches a year, each carrying 3, but sometimes 2, astronauts each. The number of Astronauts on the ISS fluctuates but we have had a constant human presence on the ISS for 19 years.
Speaking about the ISS, the ISS is pretty much just a really big satellite and over the years it's been upgraded and repaired many times sense it was created. There are many spacewalks each year out of the ISS to either upgrade, repair, or research activities. Sense 1998 there has been 225 space walks.
So in conclusion, yes there are several spacewalk a year but they have in the recent years been focused on the ISS. If a satellite operator wants to pay for a crew of astronauts to fix a satellite they could, it would be hard sense the only vehicle that could do something like that (the Space Shuttle) was retired back in 2011. So usually they are deemed a loss and a new one is built and launched.
If you're looking for some resources about space exploration than for me the best at breaking complex topics down is Everyday Astronaut on Youtube, another channel that is good is Scott Manley who will talk about more current events. If you have any questions just reach out.
Scott Manley YouTube
Everyday Astronaut YouTube