Breast lump that moves

I am looking for some reassurance (again). I have posted on here several times.  Has anyone every had a moveable smooth form lump. If so what did it turn out to be? Cyst? Cancer?

I keep reading for my age (49)this is a good chance it may be a cyst as I haven’t had menopause yet.

I don’t want to be clutching at straws but I’m so anxious and want to be hopeful