You use only 2 sat/byte, that is very low and can not use free tx accelerator like https://www.viabtc.com/tools/txaccelerator

I check your Pending transaction and it is not RBF opt-in.
https://blockchair.com/bitcoin/transaction/1848b39fd2918ed5d2ee0b196d8a5d04228cbbd8ff74ccfdaae6bbccca67de8b

How did you make this transaction?
Is it a withdrawal from a centralized platform?
Did you broadcast it in your wallet but that wallet does not support RBF opt-in?

Could you share more information please.