To store memecoins or other ALT, maybe you should try Phantom wallet, lots of people recommend Phantom wallet and it is getting popular for SOLANA users.... if you use BSC too often, you can use MetaMask, but if you start to think that SOLANA and ETHEREUM alone is more than enough, then Phantom wallet is the solution.
to hold BTC in the long term, the free version is of course Electrum which is the best... while the paid version, use a hardware wallet like Trezor which is safer... because most of my assets are in the form of BTC, I focus more on securing it my BTC assets in some of my own personal ways.