I've a few similar things happen. I talked to my brother on a discord vpice chat. He very briefly mentioned some game he plays and we went back to what we were

I've a few similar things happen. I talked to my brother on a discord vpice chat. He very briefly mentioned some game he plays and we went back to what we were doing. I never did anything else regarding that game, not searches, not text convos mentioning it, nothing. The next day I started seeing YouTube ads for it.