Recieving cyberthreats and my phone got hacked in an unusually rare way.

I once experience someone's laugh coming from my phone and it was of a male's while watching a why files video about aliens in Antarctica, clearly district from the audio of the video and also had another instance of a voice supposedly coming from a YouTube video on a science topic which was constantly pointing out my lack of attention everytime I was not understanding a point being presented in the video and accurately pin pointing how I am not understanding and how the information is going over my head and in neither of these cases was I connected to a call.

Another one is that of a time when I wasn't with my phone and I came to visit a relative's house and we were watching on a smart TV. We were watching news (most probably a recorded one) in which the anchor/reporter was talking about how the youth should use artificial intelligence to improve their skill and make money and I was kinda not listening to it and moved my eyes away from the TV and just looking down on a book and as soon as I do, the sentence of "listen carefully" which should have been what the anchor said gets replaced by a similar but different person's voice saying "listen here bitch" equivalent of a phrase.

(The actual language being spoken on the telivision was Hindi speaken in India so the translation isn't quite the best but yeah the replaced phrase was a very rude version of the original sentence which also was very specific to one person being me cause yk I was the one who looked away)

There's also one moment of me searching Nikola Tesla and for context I was very obsessed with Tesla during that time and all, so I search up the word Nikola Tesla on Google and to fill the sentence the first search suggestion was in Hindi (which shouldn't have happened as average Indian isn't as interested or even know of Tesla to begin with to search about him in Hindi) saying "does Nikola Tesla looks something to your mother's family" or something like that cause I am not fully sure about the actual sentence but it wasn't such a polite suggestion and don't tell me people would search something like this, it just straight up seems like a cyber threat or bullying.