New phal with yellow spots

[Silvia]

Hi everyone,
First post here, so please do let me know if I m doing anything wrong.
I bought for 3 euros this small phal 5 days ago in a shop in a metro station.
The shop had about 5 of this one, in bad shape and all with basal keikis. It was in a very very cold env, no natural light, and in the middle of cold drafts. So not ideal conditions.
I repotted and cleaned from dried and black parts.
What do you think of this yellowish spots?
Fungal or just poor care?
Thanks for your help!