If you want to carry trading simulations on crypto. Almost all exchange now have the demo mode. You just have to pick which one you are more interested in
1. Binance
2. Bybit
3. OKX
4. Phemex
5. Bingx

All you have to do is sign up and maybe carry out KYC. All are free, and you will be provided with demo funds (demo USDT or demo BTC)