Top altcoins such as ETH, BNB, ADA, DOT, SOL, MATIC, and TRX are also good coins for investment. These coins deserve to hold besides holding Bitcoin as your main asset. Sure Bitcoin is the safest coin for investment, but those top altcoins offer an opportunity to gain bigger profits. Altcoins sometimes have a more significant change in prices, that is how we can gain bigger money on altcoins.
Based on your altcoin recommended for investing seems only with TRX I think not potential yet, Justin as the owner from TRX coins not really excited how advertising his coin project. Better with ETH or BNB only most recommended altcoin for investing but for ADA almost slowly growing up after made ATH last year. For Matic and Solana coins I think become second option if have another saving fund for investing, but first priority investing in BNB or ETH because both coins potential for the future except another coins like ADA, Matic, Sol or TRX.