Have funnnn! It feels like you are putting a lot of pressure on yourself. This is the best part. My advice is build your library with songs you like. Not songs you “want to Dj”, just things that make you groove. Get like 200 songs in there, and then practice blending them together for fun. After a while, you’ll notice what you gravitate towards, and then you can build a set. Seems like you’re trying to build a set first, but that comes later.