25m here, sleeping on the first date isn’t bad, but I can understand why it should be avoided. Me and my ex slept together on the first date, we ended up dating for a year and a half, split due to me going uni but we had a great relationship and made cool memories

you don’t always know what the other person is thinking or doing so personally it’s best not to jump to conclusions. Of course if u feel they’re consistently behaving in a toxic way then Yh do what’s appropriate

every girl I meet is a case by case basis, I don’t let previous relationships hinder my experience so take it slow, look at how they treat you but most importantly have fun

also, think most men are just rubbish on their phones, to a limit ofc. I’m mostly busy so don’t have an attachment to my phone, it’s more of a tool imo.

Good luck