My best teacher in all Souls games was still Central Yharnam, the first level in my first Souls game Bloodborne. Best teacher for environments -- dealing with groups of enemies, unlocking shortcuts, the whole nine yards. Also the two bosses Cleric Beast teaches you how to deal with giant enemies and Papa G humanoid ones.
(Is this truly "git gud?" Well, still the Central Yharnam prepared me for my journey through Souls games.)
Another thing that could fall in the category of me "getting gud": my first Rune Level 1 of Elden Ring. This was the first challenge run I did in a Souls game. I did at one point seriously plan to do a BL4 run of Bloodborne, but still to this day haven't done that. I think what my first RL1 really taught me was build making and looking for creative solutions. I did now RL1 Elden Ring multiple times and also SL1 DS3. Challenge runs in Souls games are really fun, it turns out. I even beat Elden Ring Randomizer at RL1 (that was so much fun).
I did not have time to play any Souls games this weekend. I did play a bit of DS3 during the week but didn't have time this weekend and probably won't have time in the near future due to irl stuff.