Ludovico Einaudi (Trust me, it will be perfect: easy to learn,sounds more difficult than it really is, nice, melodic and new agey

). Have a look here:
https://www.pianostreet.com/smf/index.php/topic,8225.msg113552.html#msg113552(minimalist pieces – description of several Einaudi pieces.)
Satie:Gymnopedies (no.1 is overplayed, but the other two are equally nice and rarely played) and Gnossiennes.
Mendelssohn Songs without words. Have a look here:
https://pianoforum.net/smf/index.php/topic,4371.msg40871.html#msg40871(Mendelssohn favourites)
Schumann – Scenes from childhood (especially no. 1 “From foreign lands and people”, no. “Traumerei” and no. “The poet speaks”), Album for the young op.68 (especially no. 13 “May, lovely may”, no. 14 “Little study”, no. 28 “Remembrance”, no. 30 “***”, no.32 “Sheherazade” and no. 35 “Mignon”).There is also a very beautiful, and easy piece in his “Forest Scenes” called “Solitary Flowers”.
John Field – Nocturnes (no. 4 is my favourite).
Scarlatti: k27, k69, k213 (all suitably lyrical and melancholic)
Schubert – Impromptus (op. 142 no. 2 in Ab is the easiest – op. 90 no. 3 in Gb is the nicest)
Faure – Song without words op. 17 no. 3
Dvorak – Silhouette Op. 8 no. 2
Max Reger – Maria Wiegenlied and Traume am Kamin op. 143 no. 2 (con moto)
Ottorino Respighi – Notturno
Grieg – Lyrical pieces (especially Waltz op. 12 no. 2, Berceuse op. 38 no. 1, Melody op. 38 no. 3, Butterfly op. 43 no. 1, Little bird op. 43 no. 4, Erotik op. 43 no. 5, Notturno op. 54 no. 4, Arietta, Melody op.47 no.3, At your feet, Gade)
Liszt - The “Consolations” (S. 172) are all easy and nice (no. 3 is a favourite with the general public)
Prokofiev – Melody in Eb major, Vivo in G minor (from his “Juvenilia”) and from his “Pieces for chidren” op. 65 you can try no.11 “Evening” and no. 12 “The moon strolls in the meadows”. His Prelude op. 12 no. 7 is also nice as are the four “Fairy dances” (op. 97 nos 1 – 4) which he transcribed for piano form “Cinderella”.
Edward MacDowell – To a wild Rose
Shostakovitch: Lullaby. Also, have a look here:
https://pianoforum.net/smf/index.php/topic,2035.msg16633.html#msg16633(Shostakovich preludes op. 34)
Samuel Barber also has some nice, easy pieces:
https://pianoforum.net/smf/index.php/topic,2363.msg20436.html#msg20436(Barber piano pieces)
Victor Carbajo is a wonderful contemporary Spanish composer writing mostly tonal music. There are some real gems (like his “Valsitos for Emilia”) here:
https://www.pianoforum.net/smf/index.php/topic,8368.0.html(Victor Carbajo)
There is some really beautiful (and easy) piano music from animes. Have a look here:
https://pianoforum.net/smf/index.php/topic,2357.msg56150.html#msg56150(Joe Hisaishi sheet music)
Heck, you may even try some Rach:
https://www.pianostreet.com/smf/index.php/topic,12061.msg126976.html#msg126976(Rachmaninoff easier pieces)
Also have a look here:
https://pianoforum.net/smf/index.php/topic,1943.msg15389.html#msg15389(Haunting Nocturnal pieces)
https://pianoforum.net/smf/index.php/topic,2147.msg18098.html#msg18098(Easiest piano piece ever written)
https://pianoforum.net/smf/index.php/topic,2287.msg19431.html#msg19431(Melancholy and depressing pieces)
https://pianoforum.net/smf/index.php/topic,2314.msg19869.html#msg19869(Schumann’s Album for the young)
https://pianoforum.net/smf/index.php/topic,2562.msg22127.html#msg22127(Suggestions for repertory for someone who has been playing for a year)
https://pianoforum.net/smf/index.php/topic,2851.msg24984.html#msg24984(Introduction to romantic pieces – how technique is specific to pieces)
https://pianoforum.net/smf/index.php/topic,4140.msg38111.html#msg38111(True repertory for total beginners)
https://pianoforum.net/smf/index.php/topic,4238.msg39061.html#msg39061(easy show off pieces)
https://pianoforum.net/smf/index.php/topic,4416.msg41105.html#msg41105(nice slow romantic piece for beginner)
https://www.pianoforum.net/smf/index.php/topic,7008.msg80656.html#msg80656(Beautiful music that is not hard to play)
Just the tip of the iceberg, but it should keep you going for a while.
Good luck

.
Best wishes,
Bernhard.