Yes, my game is good, you can have fun
I did not have fun. It made a bad impression, and that got worse. I tried for like two minutes, but there was no fun emerging.
It started with the ultra high pixelated "story" that has no information value, so the character could have just been a jumping square. Controls are made for two hands, but could have been for one hand. Why return and wasd? Why not space?
The collision detection is quite bad. You die. A lot. We do not have 1985. And even then those games had something like lives or health bars. Insane difficulty does not equal fun. You swing your stick or whatever and if you are anywhere near the enemy pixels, you die. Unless you swung it before at the right moment.
There is no check point and you start again and again from the start.
Did you let anyone try the game? What did they say? And were they pixel platformer enthusiasts with a preference for unforgiving hard difficulty? Because only those type of players might think your game is good or fun.
You should try to market your game to those. But there are just so many games in that genre, 30000 on itch. Maybe get inspiration from your favorites for things you could improve.