if the price of Ethereum hasn't reached the ATH price, then it's still the right time to invest in Ethereum, therefore you don't need to wait for buy Ethereum, because now is the right time to invest in Ethereum, then I'm sure when the market recovers and starts to increase again, so you will get profit from investing in Ethereum at this time, especially when the bull run comes, then of course you will get a lot of profit from investing in Ethereum, because I believe that the price of Ethereum will make a new ATH price.
According to coinbase report The ATH of Ethereum is 4891 but that time scenario was change and Ethereum was proof of work but now when Ethereum converted to POS , many fud has been also created that Owner of Ethereum can do anything and now it's becomes centralized. It's was best time to buy when it's down 1200$. now Ethereum trading above 1800$. i am agree woth you that in bull season Ethereum will rise but we don't when will be bull season. Maybe we see some correction before bull start.
I think the best strategy is to buy with my 20% fund here and then wait for market behavior. If Market up then i will not be regret for not investing before bull. If market down, i will buy at low rate and wait for bull.