Les îles

Without context and knowing nothing of the makers' intentions, this film is an exploration of (passionate) sex, accepting the bizarre, and finding one's satisfaction. Some weird **** happens, yes, but it gets interesting from there. Just let the four song soundtrack take you in for a sensual ride.

Side Note: I really enjoyed seeing three actors (Simon Thiébaut, Thomas Ducasse, and Félix Maritaud) from Knife + Heart (2018) and am going to assume that they're either part of a guild/union or primarily do independent films.

Similar: In the Valley Below's The Pink Chateau (2019), which you should see live in theatres if they're ever near you. It's far less weird than this and arguably more sexual.