memories

I guess it depends entirely on what you want to achieve. In your description, you said "The game is generally about you losing reality and your memories." and I think it does convey that feeling very well 👍. Also, having seen several of your entries to various jams, I can tell you are improving.

In your case specifically, since you make everything from scratch and on your own, I'd have a few recommendations, especially about games in the adventure genre:

1. Try thinking up a short story in advance. For jam games, you don't really have the time to make it a long story, but it's good to have a goal.
2. Create some nice, memorable characters. You can do this in dialogue in a dialogue heavy game, in graphic style, or them having a certain gimmick. For some good examples in this jam, I'd say stuff like Fluffy the hamster in FLUFFY FILES (cute graphics and a gimmick), the Popochius in the game of the same name (also cute graphics and a gimmick), the characters in The Gay Agenda (over the top personalities and dialogue) and many more.
3. Figure out a good format to tell the story in. Do you want an overhead style like old Zelda games? Do you want a first person view? Do you want a side view, kind of like a platformer? Heck, maybe even mostly text.
4. Save yourself a lot of time by making use of free art assets, such as you can find here on itch.io or on opengameart.org. People invariably judge a game by its graphics even when they shouldn't. Having stuff provided (for free) by good artists saves you a ton of time, and also makes your games look more professional, instantly improving people's opinions of it.
5. If you have puzzles, combat, or arcade elements, make those in a way that, for yourself, it is too easy. You yourself will know the game inside and out, for you it's easy. For others who are playing your game, it's hard, So make it too easy for yourself.

Funnily enough, most of those tips wouldn't apply to Memories as a game because it is such an unconventional story and a way to tell it. And they are, after all, just general things to consider, nothing mandatory. But the biggest thing of all is: be creative and make something you yourself would actually enjoy playing!