In the rare cases where I want to give advice about this, I use a copypasta that I copied from someone else. Perhaps you will find it useful.
Hi, it looks like photos of this one organism are uploaded as separate observations. On iNaturalist, multiple photos of one organism taken at the same time and in the same place should all be uploaded as one observation. If you have accidentally uploaded images as separate observations when they should really be combined into one, here is a tutorial which tells you how to combine them: https://forum.inaturalist.org/t/how-to-turn-multiple-observations-into-a-single-observation/9838