"For home users we are working with Cyber Aware, advising that you create passwords using three random words. You just put them together, like 'coffeetrainfish' or ‘walltinshirt’.

You can choose words that are memorable but should avoid those which might be easy to guess, such as 'onetwothree' or are closely related to you personally, such as the names of family members or pets."

https://www.ncsc.gov.uk/blog-post/three-random-words-or-thinkrandom-0