Is there any Bitcoin trading apps for 14+?

I’ve been looking around for apps that I can transfer money into to trade with bitcoin and I’ve done a lot of research and looking learned how transactions work and all that stuff still learning, but I want to experiment more with trading so is there any apps out there that can be used at the age of 14 or higher cause I am I looked around and I can’t find anything. I already traded on Cash app, which is allowed, but I’m unable to trade of other coins on there, so I’m just wondering if anybody has found anything and I’ve looked into non-custodial wallets and I’m unsure about those too sounds like some advice and any anywhere or anything I can trade on that’s safe of course if it even exists