I suspect there’s a bigger story to this than what you’ve shared. When I have felt left out, it helped to just get really busy with my own things, even find a new hobby or volunteer somewhere. After a while I regain a broader perspective... people get busy... not everybody wants to include me... many times I found I was perfectly fine or perhaps better off doing my own thing independently anyway. This may or may not be the right answer for you.... The answer for me was... to focus on constructive and positive things I am building in my own life and other issues usually don’t seem so big after all.