striking for 1500 - 1700 elo
Sicilian is a hard opening to play (in my opinion). Tried to use it myself but noticed my rating jump once I switched to Karo Cann. I'd recommend playing that for black when white opens with e5. For d5 you could try learning f5 (Dutch defense). Also for master games at your level I would recommend checking out YouTube. There's a very large amount of learning material on Youtube that you can utilize, and I would check out different content creators to see who you like the best.