Spawn fix for drowneds

There are way too much drowneds in the water, especially them with tridents on bedrock edition. So my idea is, to make drowneds with tridents only spawn in deeper oceans and not at beaches or rivers, so that you cant get annoyed by them. This would also make the trident a more special item. The drowned spawnrate could also get reduced by 50%, especially on not deep oceans. Maybe the drowned spawnrate could also be higher in the night and lower, when the sun shines.