Good job!
I liked that you took the time to use different sprites for the objects that fall, implemented sounds when you get points and added the highscore in the title screen. Those details add a lot to the experience. It's great to have a difficulty selector as it makes the game more accessible for everyone. The music selection was good too!
There are some aspects to improve. The hitboxes could be better, as sometimes they obstruct the game's flow. For example, some objects had a small hitbox so it was difficult to catch them despite their size. The "BEACH" letters of the medium map were tedious to avoid as the hitboxes were small but with the enough size to be an obstacle for the player. You may try implementing animations for the player, it would make the game feel more alive. I think the limitation could have been implemented better. I noticed that you can only catch the objects when you are on the ground, so using the same key feels more like a restriction.
All in all, it's a great game with some points to be improved. Keep making more games c: