If you reach out to your ex by text or phone all and they say, “it’s not a good time talk”, don’t try and force them to talk to you or apologize for “bothering” them. Instead, acknowledge the inconvenience and end the conversation with something like; “I completely understand. I will reach out to you later at …). This gives them a heads up that you will be reaching out again.
Persistence without pressure is key to successfully attracting back an ex.