I know that pain all too well – on free sites half the scores are slapped together, I wasted ages on that. I switched to Note-Store https://note-store.com/ and haven’t looked back: it’s a digital sheet music shop where the arrangements are made by professional musicians, not random people. The catalog is huge, with search by song, musician and genre, so you find what you need fast. The printable PDF is included in the price and available right after purchase – download, print, done, no botched versions. What really helps is the online player: you preview the arrangement before buying and know whether it’s the right version and whether you can handle it. One tip: always listen to the snippet in the player first, arrangements come in different difficulty levels so you don’t grab something too hard.