What kind of experiences you have had when you moved from slowly app to some other social media app?

Well please share your experiences like was it good or bad?.. I will go first for me majority of the time i have shared my insta like my main id..with my female penpal friends and the experience was positive!! and they were all really nice..but I have read here in some of the posts like some people have experienced scam or the experience it was totally awful, so is it like that only like only bad experiences took place no good onces when you moved to different apps!?

And like after how many letters exchanged, you get to the point or like realise that yeah maybe we can talk on other apps!? And are you always the first to initiate like give your id or your penpal!?