If you buy old coins during the bearish season last year and hold them until next year during the bullish season, we can possibly achieve big profits, but not up to 100X or 200X. Because only new coins and projects can provide such big profits.
Not every old coins can give us good profits. Some old coins even don't increase as expected, they look very hard to increase. Some of them even keep decreasing because the demand in the market is very low. So, be careful to choose old coins, don't choose old coins that are not popular anymore! It is better to choose the old coins that still have big demand in the market. Ethereum, Polygon, Solana are some of old coins that have good demand in the market.
For new coins, they are very risky although some of them can increase 100X or 200X. If you are not really confident with the new coins, it is better to choose old coins only.
Agreed with you, not all the old coins can make huge profits because some of them are already stagnated in terms of monetary performance. Some coins chosen can still be in circulation, which will be safer, for instance Ethereum, Polygon or Solana, despite being old, people still have them on the market. However, new coins also contain a lot of opportunities though the volatility is higher compared to old coins. Well if you are not so sure with new coins, it would better to go with old coins that has already been tried to avoid the negative sides that comes along with it.
But if only Bitcoin gets the good news that will eventually make its price ascend to the roof and create a bull run, there may be chances that old alts too might have the potential of rising.