Me, looking for a first job, deciding to do some online classes to get more valuable info to put on my CV;

Does the classes, decides to let the final quiz to do a few days later;

((Notice that the first class I decided to take in was Economics))

Today I search for "(website name)" and the top result is a Amazon page with books on, guess what? Economics.

I heard some rumors on Reddit about DuckDuckGo stealing your data with situations like these. The comments claimed that "It was your keyboard selling the data, not DDG". But I use FUTO Keyboard, it doesn't sell data. What happened here?