No transaction found with the hash

No transaction found with the hash
Txid: b738ca45763c8151e29a9f0c7249ff2e38e4e2398a8beec49a155514fae9fe35
Txid: da149ade1f7cfa9f410d0c943f7c5dd98ab918eb77a59eeb6cb7a2045c79f662

Two transfers of $ 3000 were lost.
What should I do? Who can help?

any print screen for those transaction ?

same thing happend to me from changelly…almost .5 BTC to LTC and its stuck in BTC what do i do???

at this point you may check if the transactions can be abandon… if send from a core wallet.