He has a general idea on how he wants to play, but he doesn't have the tactical ability to see beyond his opening moves.
Proper manager will do the following:
1. Analyze his own squad
2. Determine which formation is best suited for the squad he has at his disposal, including backup, bench, plan B, etc. Retrain players' position for emergency backup, developing drills to suits his game plan. A simple well executed plan sometimes works wonder (Leicester counter 442). Teams like Everton / Leicester have 1-2 star player, and develop their tactics towards making the best use of what they have.
(e.g. SAF retrains valencia as right winger)
(e.g. SAF probably tweaked gary to bomb forward often during Beckham and drills him accordingly)
3. Go into the match against real live opponent (NOT AI), the one that can outsmart you, out think you, surprise you with their sudden blitzkrieg
4. You see the lineup, you analyze the first 20 minutes, a good manager would quickly understand what his opponent are trying to do, and changes instruction to his game-plan to counter/nulify such threat.
(e.g. SAF using Park to man mark Pirlo falls under surprises blitz as it's not normal to tell your attacking winger to stick to a playmaker, it's up to Milan to quicky within 45 minutes to counter a plan)
(e.g. Jose targeting Shaw all day falls probably under expected moves, it's up to Ole how to counter that. Could be by instructing Maguire to stick to his line, tells his LW to help up, Matic to double up, etc)
5. Off course along the way, there are X factors such as (Player individual brilliance that scores a goal, blunder, red card, error, miscommunications, referee, injury, luck etc) but over 38 games tactical awareness shows.
I don't see 2 and 4 from Ole. He often just sat in his dugout looking lost. You don't need to be Klopp, but if you're sitting there doing nothing it means that you're either:
1. Have no clue what's going on
2. Have a clue on what's going on but have no solution to it
3. Thinks there's no problem with your tactics
All of them aren't a good indicator of a good manager. Jose found out our number, and Ole did nothing to rectify it. Even telling everyone to focus on Defence and regroup until half time mark is a good tactics, at least it buys time until you can figure out what's what. Come 2nd half, nothing changes, playing with 10 men means you need to rely on counter attack more than ever, you need to hit and pray it kills, whatever it is you can be sure your initial formation won't work.
One match, two match, three match. How often does this happened? For me that's a very good indicator of one's ability as a manager. Freak loses does happen, just like freak wins happens, but over the years one with tactical awareness would more often win, even if he lost we all can see what he's trying to do. For me there's no excuse after 2 years you still don't know how to employ Paul Pogba, or Daniel James, or Martial, these are your player, the one you train every day for 2 years. By 2 years (which is a long time in modern era) you should already know by heart what they does best, and what they don't. In 2 years time it's enough for you to mould them (at least tactical wise) on how you want them to play.
Pogba might never become a DM, or an RW, buf with 2 years you should at least make him a CM that plays according to your needs. Failing that it's either Pogba should be fired, or the manager should.
And all the above has got nothing to do on whether you have Sancho or not.