Which social media platforms should athletes focus on when just starting out?

Start with Facebook and Instagram as they're the easiest to use, have the largest audiences, and reach most target demographics. Facebook skews older, Instagram is middle-aged, TikTok is younger. For intermediate users, add YouTube - you can repurpose Instagram and Facebook Reels as YouTube Shorts with minimal extra effort. Don't try to master all platforms at once. Focus on the platforms where your sponsors' customers actually spend time. Snapchat, Twitter, and Threads are more limited in audience reach.