Well, we can't be 100% sure that altcoins will have a good price in the future. however, for popular altcoins, I'm pretty sure, moreover popular coins like ETH, BNB, MATIC, DOT, ADA, and others have huge upside potential when a bull run occurs. However, I'm not so sure about altcoins - altcoins are stunted, and right now, a lot of altcoins have slow growth. I just hope that the altcoins that you guys believe will have a good future will actually have a high price in the future.
In reality, we cannot be sure about the exact future price of altcoins. However, there are indicators, events, and updates from their teams, and details of the currency, such as its market value, historical prices, and other things that may show us whether the token may grow in price in the future and whether it will be suitable for the long term investment or otherwise.
You mentioned the top altcoins, the most well-known among others, each with innovative features, significant use cases, continuous developments, and professional teams. Therefore, with the improvement of market conditions and Bitcoin reaching a new all-time high following the halving event, I expect that these altcoins with high potential will be affected by the movement of Bitcoin and follow an upward path. Therefore, I prefer old altcoin projects over new ones because they have had a strong presence in the market for years, have achievements and Continuous goals, and have gained the trust of investors and traders.