Many people want to exit the crypto space in this market, and they ask me to recommend a coin for long-term holding, something to just leave there and check in a few years. I recommended BTC, but many people think BTC's current market cap is too high and it won't rise much more, so they want me to recommend a reliable altcoin...

Why don't you trust BTC?
Bitcoin is the best asset. You don't have time to follow all kinds of tokens, and you don't know which will rise and which will go to zero. Just choose BTC, hold it for a few years, and there will definitely be opportunities.
As long as BTC doesn't go to zero, there's a chance in the crypto space. If BTC goes to zero, all other tokens will also go to zero, and the crypto space will be over.
If you don't have time to monitor the crypto market, or to chase meme coins, farm airdrops, and you have capital, investing in BTC is still a more suitable approach. BTC will also go up and down; it won't double overnight, but it also won't go to zero.
Other project tokens can't be guaranteed. Some projects collapse and their tokens go to zero. Some can multiply five times in a month, but can also drop 90% in a day. The potential gains are high, but the risks are also significant.
If you can hold for several years, choosing BTC remains the most reliable option. #比特币重回跌势