It's better to use $100 for other things but maybe a small amount could be done to gamble as we have a chance to win

If you want to invest in meme coins, you need to research for more. But we have some meme coins that have popularity such as Shiba, Bonk, BFG.
Wait, BFG is a memecoin for you?
If I win $100, I will make a plan for reinvest in Bitcoin for $50. I will use small amount of money for gambling for $7 and buy BFG for $25 and BNB for $18 and then staking Bitcoin, BNB and BFG to enjoy the return.
I don't know if that is a good plan but it can work for the long term.
It's a good plan until you have executed that. And if you think that it's going to work long term for you, you do it.
We know what's best for us and all of those cryptos that you've mentioned, they seem fine to me especially BTC. Having some side altcoins like those that you've mentioned is okay.