So here is my issue. i do not understand why the turn base cancels out 1 turn combat effects on enemies.

so to give the image you have 2 characters. 1 enemy and 1 player.

the order for the turns goes like this. Enemy first then player.

Turn 1 Enemy strikes player for 10 damage. end turn.
Turn 1 Player has a quaterstaff causes enemy 6 damage and uses topple skill. Succeeds check. Enemy toppled for 1 turn.
Turn 2 Enemy stands up. ?!? attacks for 10 damage. end turn.
Turn 2 player etc etc. repeat the above.

exactly where does the 1 turn of prone count? my issue/logic is that it should follow as:

Turn 1 Enemy strikes player for 10 damage. end turn.
Turn 1 Player has a quaterstaff causes enemy 6 damage and uses topple skill. Succeeds check. Enemy toppled for 1 turn(I.E its next turn
Turn 2 Enemy prone.
Turn 2 player attacks with quaterstaff causes another 6 damage.

The games logic follows the principle that 1 turn means: A cycle of during the whole turn for all individual characters. The reality of this is that there is actually no 1 single turn that the enemy remains prone for. It remains prone during the same turn it was made prone. Meaning the player will never get the benefit of the prone. This bizarely is also how it works if the enemy made the player prone. The next time the player stands up. This feels like there is misdirection in the actual term of what it means to be "made prone" for 1 turn.

So apply this to Mind whip. 5e spells mod.
Turn 1 Enemy strikes player for 10 damage. end turn.
Turn 1 Player casts Mind whip causes enemy 6 damage and applies 1 turn missed action
Turn 2 Enemy Recovers form miss 1 turn of action and takes an action anyway.
Turn 2 player etc etc. repeat the above.

This is where the opposite happens to prone now if we switch in game who goes first

Turn 1 player cast mind whip Player casts Mind whip causes enemy 6 damage and applies 1 turn missed action.
Turn 1 Enemy misses 1 turn of action and then either makes a bonus action or not and ends turn.
Turn 2 Player casts mind whip causes enemy 6 damage(again) and applies 1 turn missed action.
Turn 2 Enemy misses 1 turn of action...etc etc etc.. until the spell slots run out

The logic is lost on me.

please give your take and insight on this...