How do you check/confirm if a trending coin even has real value?

I've started hodling coins/tokens for a few months but admittedly it's mostly based on the CMC price chart and what some posts here recommend. But how do you usually judge if a new coin is even worthwhile?

I know that tokens should at least have some utility to be very useful. But then that's covered by super expensive top coins like BTC, ETH, BNB. Now I'm curious what I should use as a basis to determine the value of other rising/trending coins.

For example, I know AVAX (11), LTC (15), and UNI (17) have utility uses such as Dapps. I read that Avalanche has growing Dapps like the Pangolin DEX and Uniswap is also a DEX.

But what about DOGE or SHIBA? Or even memecoins? Or do people stake in the coins and then just sell when it reaches ATH?

Sorry for the many questions, was just really wondering your POV. Thanks

PS I'm not sure if my title is the proper wording, sorry if I phrased it wrong.