iNaturalist is definitely a good suggestion, but it is NOT an assassin bug, wrong markings and body form. It looks to be in the genus Alysus. Here’s what iNaturalist gave me as a likely hit. Also, I’d recommend the Seek app (it’s associated with iNaturalist) over iNaturalist app for casual users as it gives quick likely identifications through real-time image matching and does not require engaging the broader iNaturalist community.
