Length of content does not matter for Google Ranking and SEO.
It used to be that you needed to write detailed content and include lots of relevant keywords to rank well in Google search but that was years ago.
Today though what matters most is the quality of the content and how helpful the content actually is for the person searching Google about a question.
As long as the post or content is helpful and solves the persons problem then the content can rank at the top of Google Search.
I've written blog posts with 3 sentences that solved problems and they rank well in Google.
Some blog posts that are longer don't rank as good but if the blog post requires a longer detailed post it can still rank well.
Google search has really changed now and with their new updates they are weeding out websites with low quality content and posts and also weeding out blogs that use AI mainly for their writing of content.
Google Search is also ranking user generated content and forums higher now and even older posts from 10 to 15 and even 20 years ago higher as it's not written by AI.
Even though Google search is using AI in it's search results now for some queries they still want blog posts and articles from other people to be written mainly by humans and so that it is actually helpful.
AI content can rank but it should be really helpful and the best thing to do to get your website to rank high in Google search is to write good posts yourself or hire someone that can write good posts and articles that are helpful.
It can take a few months or longer for content to rank in Google so don't be surprised if you write content now and don't get traffic from Google for a few months to a year or longer.
Ranking in Google can happen overnight or within minutes to hours or the same day if your website is of high quality and you have good domain authority but for most websites and especially newer websites it can take months to years to rank.