Thank you so much for your tip!
The piano is not real,
it is NOIRE and I just used the “Emotional” preset sound,
which has some additional mechanical noises by default,
and when I listened to it quietly, I thought I liked it so I just left it that way and made another version without the noises for some extra choice for the buyers,
but now that you said it sounded like it has a lo-fi effect,
I checked it and at first I couldn’t hear it,
so I turned up the volume a lot, and listening to it louder it really sounds something like a lofi effect,
I don’t have a lofi effect on it though,
but you convinced me to not upload the version with the mechanical noises because depending on the playback volume it really could sound like a weird lofi effect, extra thanks for that tip!
I don’t know what frequency to lower to make it cleaner, I tried to change EQ-ing, and when I boosted a little bit the mid-high(?) frequencies it brought out the noises sounds too too much it looks like
(but it doesn’t matter anymore because I won’t upload the mechanical noises version as you suggested)
May I ask you for another quick tip please?
What frequency would you cut to make it sound cleaner?
(I would like to have a soft/warm sound to it, so maybe that’s why it doesn’t sound clean?)
Thank you very much for your help!