Well it depends. If it’s a school friend I would suggest trying to hang out with people you didn’t really hang out with before and they will get the hint and start talking to you less.
If they don’t go to the same school, gradually stop calling/texting them and eventually after a few months, stop talking to them altogether.
If they don’t go to the same school, gradually stop calling/texting them and eventually after a few months, stop talking to them altogether.