The criteria that Christians might wish to consider is whether or not a particular 'church' TEACHES God's Word, with understanding, chapter by chapter and verse by verse. If a particular 'church' has a weekly sermon without in-depth teaching, that church is not doing God's Work. Worse yet, is a 'church' that doesn't teach the Word at all... and there are FAR too many of those, as we all know.
Violet's question in her first post asked, "What if you can not find a church that you are satisfied with?"
Well, I "found" mine - it's 7 feet due west of my Rectory office...LOL.