I've been thinking for quite some time that recruiting is still to blame for most of the trouble.
Our point guards for many years had the luxury of not being lead PGs as freshman. We passed the baton from Marcus Williams to AJ Price to Kemba Walker to Shabazz Napier to... and then the string was broken. Ryan Boatright as a senior as never really a PG that ran the offense (and Ryan had a great senior year as a combo guard). After Ryan, we imported Sterling Gibbs, who didn't really run Ollie's offense until the last several weeks of the season. To be sure UConn, even under Calohun, never really ran the kinds of offensive sets you see elsewhere, but AJ Price, Williams, Napier and Shabazz ran tempo and got the ball to the right players at the right time.
We come into this year without a PG in command of the offense. We relied on Alterique Gilbert to do it (clearly, Jalen Adams when looking to run the offense showed some jitters). Relying on a true freshman who hasn't had time to adjust as Kemba and Napier did was a recipe for looking discombobulated.
I like what is going to now with recruiting, as Jalen Adams, Alterique Gilbert, and Malik Ashton-Langford have signed on in successive classes (though Jalen and Malik are likely combo guards on the college level).
Good recruiting by Ollie would have a freshman point guard on board every time a pure PG like Alterique is a junior.
For some reason, we failed to recruit a PG both in the Omar Calhoun's year, and in Amida/Facey's year. I know Samuel was supposed to be that guy, but surely our recruiting was poor that year.