The book “Its Ok You’re Not Ok” covers this topic really well. The stages were never meant to be linear. They are stages that people go through but the order can be any combination and you can move forward and backward. As someone who has been through intense grief, yes experienced all the stages but not in a specific order and once I gained acceptance I didn’t just stay there. I am still going through the stages in random combinations.

https://refugeingrief.com/book/