All that means is that they’re tracking everything about you to figure out what ads would work on you. They share your data between companies to build a profile on you.
I used to think the same as you but after enough time I just got completely fed up with everyone constantly trying to sell me things. Basically every interaction online is someone trying to take money from me. Not only that but they go out of their way to make things shittier because you’re more likely to part with your money. Like how article websites wait just long enough before you start reading before covering the screen with an ad and breaking your concentration. You can’t just scroll past those and mind your business.