Not a global opinion here as many hardcore linux users will stand by Arch or Mint, but I always have preferred Debian. It’s what Ubuntu is based on, so it uses apt(itude), yet it’s not prebloated Ubuntu and much more true to adaptation and unedited software than Ubuntu has become… But in the end it’s more personal choice and taste, so usually requires a bunch of failed attempts to get one that fits, as every linux can basically do the same things, yet on some or other slightly different way… 😜