Hi FTFM, welcome to site. Before I start, here's my first piece of advice.
https://www.writersstore.com/how-to-write-a-screenplay-a-guide-to-scriptwriting/You have to learn how to present your work or it simply won't be read by people who matter. We're more lenient in here and will take time to help you, a producer won't.
Overall, you have some idea of using film language but I wonder if you realise how fast film moves and how quickly your ideas get eaten up? Everything you have written here could have been covered while the credits were rolling by using familiar techniques such as a framed picture of the happy family, the newscast in the background, the tired husband arriving home from work and collapsing into a chair, the mother in the kitchen (sorry to be stereotypical). That's how quickly film devours your ideas.
As has been noted, you're too prescriptive about things that don't matter so much (clothes), while you aren't setting up tensions and intriguing things that will pull a viewer into your story. We get the happy family, but what if the father had blood on his boots?
the youngest child at age 6 committed suicide and what apparently is looking like she murdered her entire family.
- aged 6? This isn’t feasible even if we are becoming used to the idea of child-killers.
I could go on but I'd prefer to encourage you to work at your talent and prove me wrong by winning a Oscar.
Good luck, check out the web site.