If you decide to keep your playstyle... at your level, almost anything works, but at around 25-30 pp(per song) you'll start to notice that some maps have a higher reward/effort ratio than others.
Any "normal" map which is designed like "Liquid[Easy]" is fine. A counter example of a "good normal" beatmap is "Liquid[Normal]" where you'll have to hit multiple notes in a very short interval; and that's difficult to hit accurately.
Download more beatmaps. You might use Auto to check if the beatmap is easy for you or not. If you think that a beatmap is too frustrating for you, ignore it and try another one.
The easy and normal difficulties of that song are pretty simple :
https://osu.ppy.sh/b/843308 Also, remember that Nightcore exists - the notes usually follow the Nightcore beats on easy/normal diffs.
EDIT : OD(overall difficulty, the higher the value the harder it is to get 300s) is the biggest factor in the calculation of pp of most easy/normal beatmaps, followed by the number of objects.