Shuffle play is not random

[Madrecruit]

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Plan

Free

Country

Lithuania

Device

Huawei P20

Operating System

Android Oreo

My Question or Issue

Whenever I press "Shuffle play" on my created playlists the songs are always the same. For example. I have like 20 songs, I press "shuffle play" and it just always goes by the same order from 1 to 20 not even shuffling once. Help!