If I know the area where I want to search I was advised on another forum to go to the card catalogue and type in the town of interest, in my case usually Liverpool then that narrows it down so I don't get 1,000,000 hits, nothing more annoying than this, then when you put tick exact Christian name or whatever it comes back with zero results.

My theory is "they" are trying to keep you on their subscribed site for as long as possible so instead of you going on there and finding your record ASAP you spend hours (months) scrolling through and dismissing the flotsam and jetsam and wasting time.
Some of the hints have been pretty good I must say, but some you sit there and say "WHAT??!!!!" how the hell did it come up with this for a match!!

And consequently lots of trees have accepted these hints as
FACTS and have a right muddle of names and relationships, children born before the parents, mixed up step families, etc. The same with the LDS records, these are just a hint because there is not enough information on the "select" records ie indexes to take you back further without looking at a parish register at a record office or buying a certificate.
You see lots of trees on there where the person hasn't signed back on for a year probably because they got in such a muddle and believed the Ancestry hype!!