Hello there. I know that struggle well, I went through the exact same thing a couple of years back. Take a look at Note-Store https://note-store.com/ – it’s where I’ve bought almost all my sheet music since then. The selection is huge, spanning modern hits, pop ballads, film music and classical pieces, and a printable PDF is included in the price. You download it the moment you pay, no waiting around. What I really like is the online player, you can listen to many pieces before buying so you know whether the arrangement suits your level. It’s worked out reliably for me every time.