Coinbase has got news allowing layer 2 projects to get into them. I think that this is going to get investors who want a quick sum of profit to get into it.
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https://www.forbes.com/sites/leeorshimron/2023/08/16/layer-2-wars-heat-up-as-coinbase-launches-base/?sh=45154a5638e9)
During bull run, it is better to invest well known potential altcoins that already experienced bear runs and haven’t died yet, rather still standing strongly with valid price. That will be better option in my point of view
Much better if you're going to buy before the bull run. But that's much like a guessing game so you have no idea if it's going to be a good coin until the bull run arrives. The bear market is always the time that gives opportunity of what we should buy.