The video callum linked explains how it works, but you are correct in your general summary of how the combat has changed from Warband to Bannerlord. The free angle manipulation from Warband is gone, so as you say the possibility for things like drags or accels is severely limited. Animation manipulation is also changed greatly, which I don’t think is a bad thing since it’s the #1 complaint more casual/singleplayer people had about the MP, so that is not really the way to go to find good feints anymore. Quick double right feints are good since you can glitch the first feint into their shield before cancelling it and swinging again - any low level player will fall for that since they will assume their shield has been hit even though it hasn’t been. There are also some crackhead spin moves people are doing that jolt the character body out of range of the incoming hits thanks to the forced turning the game does when you hold an attack and spin - people seem to be combining this with heavy weapons that, for god knows what reason, stun any 1h weapon with any directional hit. This basically means by spinning and dodging attacks and stunning their weapon you can indefinitely lock the other person on the defensive. Personally don’t do this because it’s the cancer of the game rn but a lot of people are and I can’t deny that it works very well against low level players.
basically just work on your fundamentals, there isn’t much future in terms of duels competitively for this game I think, primarily because they’d last 5+ mins each between good players with this armour in a tryhard situation. There just aren’t enough techniques to bypass a block or to confuse an experienced player. Instead, you should focus on awareness and the basic combat mechanics, as well as getting some mastery over ranged/cavalry play, since they are both far more powerful than infantry in a skirmish setting.