The Su-24M was destroyed in the area of Zmiiny Island, which, under the cover of the Su-30SM fighter, tried to launch a missile-bomb attack on the south of Odesa.
My guess is the Su-24M was trying to drop the latest ruzzian glide bombs which have a max range of 50km.
Previously, the ruzzians were launching cruise missiles and shahed drones against Odesa.
Perhaps ruzzia is experiencing a shortage of shaheds & cruise missiles.