I am self taught pianist over the past 25 years i started with simple chords like maybe you would heard on ENO or La Monte Young’s Well Tuned Piano. I iV V 7 and making them ambient. Also i was very interested in Terry Riley’s style of playing modal pentatonics [The black keys] Eb for the most part.
not sure if that helps but check out Persian Surgery Dervishes [Terry Riley]
The Well Tuned Piano [LaMonte Young]
Brian Eno [ Music For Airports]