Have I committed shirk and if yes how do I get forgiven

I am 14 currently and not yet become baaligh( mature) but I accidentally committed shirk when I posted a TikTok video believing it would give me good luck I have done this on many occasions and recently I came across a video claiming to make these are shirk I’m scared now because I have been unaware of what I was actually doing and now I have come to realise I have committed the biggest sin which Allah hates.Will it count yet even though I’m not baaligh? If yes where do I go from here?