2 Stopper is the quickest strategy. Medium - Hard - Hard
There are people who ran 25-30 laps with the Softs but almost everyone lost a lot after 22-24 laps odd. So I think 25 Laps would the maximum for the Mediums, Ideally with a full fuel tank, 20 laps will probably be the quickest strategy.
And then you last race's Mediums where people did 25-35 laps without much issue (except Sainz who went 40 laps odd). This will be the preferred tyre for the race. The Mediums (Now Hards) looked good easily for a 25-30 lap run.
I would go for - Medium (18 laps) - Hard (30 Laps) - Hards (33 laps). The other option is Medium (30 Laps) - Hard (41 Laps) ! This is not quicker option. if you for a fresh pitstop & gain 2s more, you make a lot of time in the last 10 laps of say the Medium run or the Hards run (30 or 40 lap run). There is no way a 1 stopper with C3-C4 is the quicker one.
People will go for a C5 run to go into Q3. You start on C5 & do a 2 stopper. C5 Soft (11 Laps) - Hard (30 Laps) - Hard (30 Laps). Even if you pit on Lap 8 or 9 with C5 you can have the final stint with 32-33 Lap hard run. Noway does someone want to start P11 or P15 (very small gap between midfield teams) & try to run in dirty air for 10 laps. And then are on Mediums while the car ahead will be on Softs which should be initially quicker far for atleast for 5-6 laps atleast !