For me I think a story has a good ending if it has two things I want the end to be a proper conclusion to everything wrapping all plot points so I'm not wanting more. Also I'm the type of person that only wants to read happy ending in not saying tragedy can't exist any story needs some struggle but I like to see the character a I've built emotional attachments to to have endubc where I can visibly see them happy.
Sounds like you enjoy the “heroes journey” style of storytelling Sagebee. In that the protagonist grows up more or less, shelter from the world’s outside conflict suffers a tragedy that sets him on a journey outside of his village where he learns a great deal, struggles, and eventually returns home a changed man/women with new knowledge be it beneficial or eldritch.
I can get behind that. I prefer the antihero/or reluctant hero type of stories. A little darker. They don’t necessarily have to die in the end but I like it when they end with a little mystery and wonder.
A well told ending is one that brings about a sense of catharsis - a sort of 'cleansing' of the story as its plot conflicts tie up or are brought to their convergent point within the story. It does not bombard the audience with new information or contrived resolutions. It is not essential that a well told ending answer every question, but that it makes clear that these conflicts with few answers were important for the character(s) to experience.
For example, Fate/Zero does not attempt to deliver answers to the audience about who was right and wrong for their actions. Their conflicts are played out on a grand stage - avatars of ideologies and philosophies brought into literal combat based on their tenants. There isn't necessarily one 'moral to the story' - it isn't a glorified parable or a tale of heroes and personal growth - it is a projection of our various ideas and virtues in their most raw and absolute form. King Arthur and Alexander the Conquerer debating the merits of kingship with Gilgamesh and giving life to those philosophies when they cross swords.
Madoka Magica brings us into conflict with the concept of inner desire and wishes, in general. It asks us why we wish for the things we do, and what it really means when we are making a wish. This grand tragedy is played out to a beautiful end - Urobuchi is a master of Greek Theater.
However, as for 'good endings' - I have to point to Little Witch Academia. LWA is a beautifully told story that follows the more typical hero's rise ... yet it is done almost perfectly at every juncture. Forget Harry Potter - it has absolutely nothing on Little Witch Academia. It, also, ends perfectly. And I do mean that - I do not think there is a better way to have written an ending for that series. Of course, it is only possible because the story setting and plot direction were very good to begin with.
