Just keep observing. Consider “mothing” for moths and other insects attracted to lights at night: https://forum.inaturalist.org/t/light-setups-for-mothing/48231
400 species on a property even as small as that in Columbia is just the tip of the iceberg. You can probably find 4,000 or more with time and some knowledge (and maybe better camera or macro adapter for phone for the smaller arthropods).
If you find yourself getting more serious, invest in a better camera to get better photos of the smaller things. Keep learning about what photographic angles and features of the organisms are best for identification–to help increase the chance that you’re observations can be identified to species.