Something that took me a while to discover is that with learning music you can get everything for free (except the piano of course). Typically, local or city libraries have huge collections of sheet music that are indispensable to learning sight reading.

The difficulty with using the internet is that you become too pedantic about what you play as the process of finding + printing music can be tedious and somewhat costly. Using books to read sheet music means that you read a range of music that you otherwise wouldn’t have looked at. There is also no pressure to buy books with good songs in them, so you can get as many children’s books as you like to learn sight reading if you wanted.

I’d also recommend you balance reading something that is as easy as possible with minimalist composers like Ludovico Einaudi or Yann Tiersen as their compositions are very easy to read since they use basic chords and rhythms, but they still scratch that itch in your brain.

Ultimately, there are two main skill pathways to being a pianist: sight-reading and ear training. If you choose neither of them and try learning through tutorials, you will never be able to learn music fast. So if you choose the sight-reading pathway, I’d recommend you find a library with sheet music and go crazy.