Hello @christine_m, you are not alone in your thoughts as this happens sometimes, we find out who our friends are. Sometimes it is as simple as them not knowing what to say or do and often we need to guide them by asking for the support we need.
Partners are often in the same boat as that or they drop their bundle as they cannot fix things for you.
Try not to think about it too much as that just makes you feel worse. It is very disappointing to say the least but you have to accept that and move past it the best way you can.
Have you actually said anything to any of them ? Maybe as you have helped them before they think you are vey strong and don't need help.
Perhaps ask your GP for a referral to a counsellor so you can talk about it ?
Above all, remember this is on them, it is not you.
All the best. Sending a cyber hug. 💖