DA revolvers are about the safest, due to the long trigger pull. Shooting one accurately in DA mode, requires a lot of practice and better yet, instruction.
For someone with training or a lot of practice, the SA revolver is easiest to shoot accurately, of the revolvers.
SA pistols, require more practice for safe use, imho.

I am a proponent of DA revolvers for self defense.

The classes I ran for my fellow worker's wives on handgun shooting showed every one of them could easily stay inside the 8 ring on a B27 target
at 7M the first shooting session with the K.22 S&W's we had, shooting double action. By the second day, they were doing that at 15M with the .38's,
double action.
2 of them took up handgun shooting at the local R&G Club range, one with a S&W Model 19 and the other one with a 9mm Browning, guns they bought
for themselves.

The 9mm gal's husband, the Jail's Sociologist, said to me : "Dammit Daryl, now I have to buy a damn gun & join the gun club if I want to see my wife
on the weekends."