I tried to turn on icloud photos to save storage and it’s been stuck at 1%. does anyone know why or how to fix it?

Answer:
Solution 1: Sign out iCloud Account from All Devices
Solution 2: Reconnect The Wi-Fi Network
Solution 3: Switch Your iCloud Photo Library Option on/off
Solution 4: Clean Library after Checking Your iCloud Storage
Tip: Fix iCloud Photo Library Cannot Download Photos via 3rd Party Tool