This is basically what I did. Downloaded my data, said "message me on Signal/iMessage/SMS, here's my phone number" and deleted my account. I haven't missed any

This is basically what I did. Downloaded my data, said "message me on Signal/iMessage/SMS, here's my phone number" and deleted my account. I haven't missed anything, and friends/family that lost my phone number usually reached out to someone else to get it. They also don't mind using other platforms to get in touch with me. Surprisingly, my mother formed a Signal group with my extended family and that's how we chat now. She's not exactly tech savvy, but found it very easy to use.