Can someone help me to get dead mans rod?

Dead mans treasure bruh it is so hard ITS SO RARE I HAD OPENED AROUND LIKE 50 TREASURE CHESTS

Dead mans tentacle ITS ALSO RARE BUT ITS SUNKEN SO EXPLOITERS/HACKERS/OTHER PEOPLE WILL KEEP TAKING

Dead mans wood not bad but I HATE GETTING 1 SUNKEN ENCHANT RELIC

I might be able to do it