How to talk to people when you have nothing to say?

So recently I've just stopped talking to everyone i know i used to have a few close friends tho now its been months since I've texted them and whenever i think of texting them i get this feeling "why would they wanna talk to me" not in a sad depressive way but genuinely cuz i have nothing going on in my life and i am a very boring person we used to play games and stuff tho now i just don't as it feels boring and time wasting to me and we have nothing in common left

and all i do now is scroll on my phone and study for exams cook food and sleep I don't go out or anything I've also stopped going to school and i also dont like asking people for anything i dont like to ask personal questions cuz it feels invasive and also i dont like to force people to try things im interested in as they always seem to dismiss them and so whenever someone texts or call me i just don't know what to talk about as i have nothing interesting going on in life

and i also dont like rejections and whenever someone rejects something i suggest or ask i just stop doing that i feel like if they don't wanna do something i say then i should push due to which ive also lost my best friend we used to talk daily but as he works with his father on their business he got really busy and so whenever i called he's like ttyl bro im busy so i just stopped talking to him as i think im disturbing him and thats why i also never text anyone cuz i always feel like i have nothing to talk about then why waste thier time

Next month i will be starting school as im trying to improve and to make friends i have to talk to people but how do i talk to someone when i have nothing in common for anything interesting to say or anything to say at all?