Yes, dont think you can upload anything but aab, at least that was my experience so far.
For your second comment: I do have this issue aswell sadly, but the maximum size is only exceeded in my case if I package my game as multi. Doing only ASTC I am under that limit, going with ETC2 seems to reduce the size by another 10% in my case, so maybe thats enough for you too.
Otherwise you might be able to reduce the size by downscaling quality in your project settings, for example changing project->target hardware to scalable for mobile and anything else throughout your project settings that can be lowered, doesnt matter much for your game and makes the size bulkier by being enabled.
There might be other ways, but I haven’t come across any yet. If you discover more at any point, please do share. I dont feel like this is how it is supposed to be, because if you hover over the ‘package game data inside .apk’ option it does say that this works only for small games, indicating that it should be possible without (and it seems to not be required on sdk33, only 34+)