solemn oracle
It's more semi-realism than realism.
Look up "painterly style" to find similar images. Or look up the artist to see if they have similar pieces.
As for tutorials, im sure you can find some free stuff on YT or image tutorials on pinterest on how to achieve this painterly look
Also check out guides on painting without sketching or Alla Prima
if you're looking at copying something more specific, like proportions or color or what not, let me know
rapid wasp
Thing about this style is it relies on shapes and gestalt. A good artist that has tutorials on this is sinix on youtube.
Neo is p spot on with the style name
digital ocean
Wow thanks guys!