As some have already advised, try get an electrum wallet and you can import those wallets on the electrum but you have to be sure that those other wallets you're intending to import where decentralized wallets with their respective keys, seed phrase and private keys, which means you cannot import a centralized wallet on this because they are having your keys in their custody, then after you might have imported them, ensure you name each wallet accordingly as you're importing them to avoid mixing up one wallet from the other.