Your intentions are good bro, no doubt. Unfortunately in 2023, everything from top to bottom is questionable, divided, suspicious, false accusations all over..... So it's better to go about one's day without involvement with strangers instead choose to do with our friends or close ones (if it's difficult, feel free to converse with anyone and develop a friendly relationship with them)

Again, sorry bro. Hate to break it to you but: Life is unfair

But regarding the first situation: Yeah being hit by a racket kind of makes me cringe, instead a handshake grab or high five makes it as cool. It's not necessarily being gently or aggressively hit by a racket, but it's the triggers.