I enjoy more slower paced FPS' these days that don't require to maintain skill. Fini the Call of Duty and Battlefield days, these licenses have been milked long enough anyways. Even the newer licenses like PUBG or Overwatch require a regular time commitment to be any good at it (which make them enjoyable).
I find myself having a great time on Rising Storm 2: Vietnam[0], Insurgency: Sandstorm[1] or Hell Let Loose[2]. They tend to have more mature audiences and less skill grind, easier to just jump in a casual game once in a while without getting obliterated for a consecutive hour.
[0] https://store.steampowered.com/app/418460/Rising_Storm_2_Vie... [1] https://store.steampowered.com/app/581320/Insurgency_Sandsto... [2] https://store.steampowered.com/app/686810/Hell_Let_Loose/