You don't need internal transactions for privacy because XMR's on privacy blockchain. Which coin are you talking about I've been reading your comments you haven't specified the name of the coin you've said works better than XMR. If this isn't about Monero which coin do you mean?
As a privacy coin it only complete a Internal transcation which is not possible publicly track like another crypto coins/tokens. but bitcoin is totally decentralised coin and it has more privacy then Monero. also bitcoin has decentralised wallet which is not possible to hack. so it doesn’t matter how internal transcation complete Monero coin bitcoin will always a strong secure coin then Monero