Help everyone filter out some coins that won't disappear or go to zero. If you still want to play with altcoins, you can consider the following:
Established Mainstream Coins
BTC: Industry leader
ETH: Leading public chain
BCH: Scaled version of BTC
LTC: Imitator of Bitcoin
ADA: Resilient academic public chain
SOL: Wall Street capital public chain, second only to Ethereum's developer community
XRP: Payment track
DOGE: Musk's iconic pet
MKR: Lending old leader, decentralized stablecoin leader
AAVE: Lending leader
BNB: Platform coin leader
LINK: Oracle
AVAX: Public chain that survives bull and bear markets
ETC: The original Ethereum
Newer Mainstream Coins
Risks are slightly higher than established mainstream coins
Relatively speaking, there is a bit more room for growth
SUI: New public chain leader
CRV: Stablecoin DeFi protocol
LDO: Staking track leader
TON: New public chain
TRX: Established public chain, but the founder is a beast
HYPE: Decentralized on-chain contract platform
XMR: Anonymous privacy coin
PEPE: Ethereum meme coin leader
UNI: Largest DEX on-chain
HBAR: U.S. compliant coin
XLM: Imitator of Ripple
ARB: L2 leader coin
COMP: DeFi lending protocol
PENDLE: DeFi innovation protocol
ONDO: RWA leader
RENDER: AT leader
TAO: Innovative AI protocol
The above altcoins have relatively gone through the tests of market bull and bear cycles, and it's not so easy for them to go to zero or disappear. If you still want to play with altcoins, you can consider these relatively mainstream altcoins, with relatively lower risks.