The hardest part about hearing this is the lack of flow, it feels as if something jagged is pulling it out on a string. Like pulling a loose hair from a bowl of soup, it has bits of food stuck to it. This should be playing like full line of music, without the unnecessary pauses and freezes. You're dunking the music in ice-cold water and it spoils the melody.
I understand you probably have trouble with coordination—most pianists do at first—and an easy way to help that is to work the beat of the song with your left hand. Then, study the right. You should always create a flow with both hands to keep notes constantly playing so that everything flows smoothly.
Another thing to take note is that of using four beats per measure. Count in seconds or the speed in which your playing, 1, 2, 3, 4… 1, 2, 3, 4… On the count of 1 hit the notes a little harder, let it move into you like dancing does. There is always a beat and this song lacks that beat. 1, 2, 3, 4.
I do recommend you practice at least 15 minutes every day. Practicing once a week barely helps you with anything.
Lypur is an excellent and free source for learning piano. https://www.youtube.com/watch?v=vphWgqbF-AM&list=PL253192EED47525A8