@vegafjord Computers are tools that humans can use.
As a human using a computer, you should make sure you really control the computer. If you do not control it, you should get rid of it, then it is not a useful tool for you but rather a tool for others to control you.
The internet allows your computer to communicate with others. Be aware that this increases the risk that you get exploited if you are not careful regarding who controls what.
There is no cloud, just other people's computers.