In this short, Coach Court reiterates, the only healthy way to get an ex back is by going no contact. This will allow that person to come back on their own (if they choose) and it must be with no intervention from you.
In this video, Coach Court talks about how some avoidants feel, after the breakup. Although some listeners may not agree, he's been confided in by many avoidants who have admitted their feelings, once a breakup is over. He discusses 'why' avoidants may feel the way they do and how things lead up to that breakup.
In this short, Coach Court discusses that some boundaries might push a dismissive avoidant away. However, if those boundaries are what you need, a healthy relationship will not make you question setting them in the first place.