I was a secondary teacher (head of maths, teacher-governor) way back when HMI ('Her Majesty's Inspectorate') was killed off, essentially because it was independent of the government of the day and hence felt able to criticise policy on evidence. HMI were far from perfect, but were so much better than OFSTED. I had later experience of OFSTED as my career progressed. They started badly, and then deteriorated.
OFSTED are now worse than useless ... and the criteria they try to use to assess schools are themselves generally detrimental to education. We perhaps should not be surprised at any of this given the crazy situation we have in which those setting the criteria and appointing the organisation that applies them have mostly had no experience, either as pupils or parents thereof, of the schools under assessment, and indeed share a strong vested interest in maintaining the startlingly unequal provision of resources within the nation's educational establishment as a whole.
There are good schools in UK, and outstanding teachers and head-teachers. But these schools are good, these teachers outstandingly good educators, in despite of the depredations of OFSTED and its old-Etonian masters. Nor do OFSTED reports in any way tally with good educational principles or practice.
So, if you want an outstanding school for your children, ignore OFSTED reports. Ask parents; visit schools; talk to children. There are, indeed, some schools that severely let down their pupils; unfortunately, an OFSTED 'outstanding' rating does not preclude a school being one of those. But, again, there are schools that nevertheless, despite everything, work as well as possible given dearth of resources; finding such schools and some are genuinely very good in spite of everything is difficult but not impossible.
This is a nightmare for parents. But, well, I tell myself, we have democratic accountability; they (you, MN people included) voted for it. Deal with it.