This sounds just like when my family member tell me that their phones are “listening to what they say” because they talk about something and then see an advertisement for it.
No, you’re seeing the ad because you googled it and forgot that you did. Or someone else on the house did.
Edit: Morons. If your phone listened to you for ads the battery would be dead in hours. More so than they do now.
Was just going to post this as well.