I will definitely HODL these 6 altcoins which are as follows:

1. Binance Coin (BNB)
2. Solana (SOL)
3. Polygon (MATIC)
4. Sandbox (SAND)
5. Decetraland (MANA)
6. Axie infinity (AXS)

I think these are going to be best performing altcoins for the next bull run.