I have friends that I have been going out with almost every week for a few years.

They have not been very good to me lately and I want to drop them, I currently don't have a good alternative for a reason that isn't related to this post so I prefer demoting them to seeing them only every once in a while.

However I don't want to give them an excuse every week(i don't think I owe them info and if I go out I can see them) and I dont want to say it straight out as it won't be received well.

How would you go about it?