Sometimes it’s easy to sit a think about why people don’t contact you. Sometimes they’re concerned and hurt that the relationship is damaged and they start to form stories in their mind which exaserbate said the problem. Generally people like to see people. Why not contact them and check they’re OK. There’s so many ways now that are unobtrusive, Facebook, whatsapp, email. Just ask them how they’re doing. If they don’t respond well you’ve done what you can.
Happy New Year and have a peaceful one, put down the sword, life doesn’t have to be a battle.