I am an ethical hacker and I totally understand Information Technology. I can tell you that your discussion about your friend with Nike shoes is just a proof that you may not know
how to use cookies and stop trackers in your browser and smartphone. I really recommend you to use Brave Browser (
https://brave.com/) which stops trackers and everything. The reason why you've
seen ads later is because other websites tracked you when you searched for "Nike shoes". There is no listener in your smartphone or whatsoever unless you're being over-paranoid.
TO BE CLEAR:
I am not defending facebook, I just want you to be informed. Since I learnt how to use cookies and stop trackers, I do not have problems with ads as I only get
the irrelevant ones. Stop blaming others, let's look at ourselves first.
Regarding libra, I think it's seen from a positive point of view in the crypto community but opinions are obviously different from person to person.
It's fine if you won't use libra, other millions of people will most likely use it.