BLE without codec

Hi,I am using NRF54L15 DK in which I need to transmit audio data over BLE where that data will be used for only plotting in application,I am using sampling rate of 16000 and 2 channels each of 16 bit i.e at 64 KBps .I am able to send data over BLE but only in one meter range ,if I increase the distance I could able to see loss in BLE  as I kept sequence number to check the loss.How can I solve this issue ,I didn't used any codec as BLE support at 2 Mbps which will be good enough as per my data ,what will be effecting BLE  if I maintain some more distance.

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