Tearing my hair out on the Mendy thread trying to explain this fairly obvious element of the law.
There is no 'therefore'. Not guilty and innocent are categorically different. There's countless material online explaining it. Type into Google 'is not guilty the same as innocent?'
The presumption of innocence is enshrined into law to ensure a fair trial without prejudice. The court makes no judgement on the innocence of the defendant.
Frustrating. So many threads end up like this, the difference between 'not guilty' in a court and 'innocent' as in didn't actually do it. Guilty people will walk free from court every week, because a compelling enough case couldn't be made to pass the standard of proof, not because they didn't do it. We're not a court, and we are perfectly able to believe (rightly or wrongly) that someone who has been found not guilty in a court still committed the crime.