For NR SA what are more frequent reasons seen for RLF?

Hi 5G Experts.

For NR SA what are more frequent reasons seen for RLF?

Out of below reasons:

  1. Layer 1 issue
  2. HO failure

Discontinuous transmission (DTX) detection for requested DL HARQ feedback on PUCCH
DTX detection of CSI reports on PUCCH
Radio Link Control (RLC) failure when the maximum number of retransmissions is reached.