This years team built a gameplay around two main things:
A wealth of lead guard, playmaking ballhandlers (Garland, Sexton, Rubio)
A wealth of Bigs with Allen, Mobley, Markannen, Love, Wade
That was the roster provided.
Currently Sexton, Rubio, Allen, Mobley, Wade are not playing.
The backup PG is injured
The guy received in the Rubio trade is more of an iso wing who missed a ton of time after getting here and is acclimating to playing without the outlet that Mobley and Allen provide.
Basically, there are no lead guards to replace what Sexton and Rubio bring. It's just Garland. No competent veteran PG available.
Then the three best defensive bigs are out. The starting center is a guy a year away from being a year away. Learning but super young and with no clue how to do anything but call for oops and swat at shots.
Demolished in the two area of strength. Not a roster of wings that can fill the void or provide the type of two way play needed for a quick in season retooling of how they play.
Get healthy, make some roster tweaks in FA/Draft/Trade season to balance the roster better and provide better depth at key positions. Build on the things that they did well when healthy this year and add new layers that clearly aren't in place yet this year.