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.