you can't buy and hold every coin listed in crypto, you should research and buy those coins which has potential to give you better profit in near future.
Here I am suggesting you some coins that you should buy and hold for better profit.
$LINK $NEAR $ICP , ENA , WLD , WIF , SOL , AVAX , SUI , TON
Keep an eye on these coins and buy as much as you can and HOLD these coins .
$POL is making a three bottom structure within the trend line structure, there's a possibility that it will break the trend this time and will move forward.
keep an eye on it, and try to buy some at this market price($0.2000).