I think the nontoxic friends just want to keep the group as a whole. We do an activity together that takes place every week. When the group increased we started doing more activities together, playing games, celebrating birthdays, etc.
Until last year we were only 3 friends. In the last 2-3 years I showed up in that activity very rarely (maybe once every 2-3 months) since it became time-consuming and repetitive.
Last year I made new friends that came for some time. They were very interested in that activity, so I invited them, and they became friends with my friends there. Since they had to commute from another city to do the activity, I felt somewhat "forced" to attend more frequently.
I think I just want to be able to occasionally hang out with my friends of group A, without generating tension with that guy. I want to go back to doing the activity every 2-3 months, and sometimes meet only with the 3 friends from the start.
I do not want to be called out if I distance myself from them a little. (They already blame me for not attending the activity very often).
With group C I had too much when the toxic in that group started criticizing me for not meeting them every week. This time I started to worry when the same pattern repeated... Maybe I'm the problem