regarding the polonaise, at this point it is difficult to give you some feedback. This is still work in progress and until you can connect smoothly the various parts, it is not that usefull to point out various issues which you will correct naturally as you progress. I think all in all the phrasing and articulation are very good, and the biggest challenge will be to get up to speed and refining the intonation. One point is to bear in mind that the forte would need to be stronger and sharper, inthe beginning for example.
Soiree dans Grenade is a very difficult piece. Again it is a very good work in progress. But I think you play it more like a Schumann piece than Debussy... you must add a little more exotic flavor to it !
In the beginning the initial melodic line is not very clear. You need to work out the accentuation a bit so that one can feel the winding line, and adjust the accent to make it a little less metronomic.
At 1.40, in my opinion you are mistaken in the interpretation. You make it very forte and too much in your face; but your right hand should play more sensuous, more peacefull too.
At 2.59-3.30, same, it is too forte in my view. The whole section must feel like surrounded by mystery, play it more gently, with more shading of nuances.
Around 4.00, same comment as above.
I think overall you will have more work on the interpretative side on this piece vs the Chopin one. Of course just my opinion. Good luck.