Personally, I do not miss the interactions with my colleagues from before I pursued my side hustle full time. But I can relate to the need for interaction and camaraderie. This can be compounded if you don't have a robust social life outside of work (no judgements), or your social circle hasn't even the vaguest understanding of what you do and just glaze over when you try and talk about it.

Perhaps you could turn to your customers for similar interactions. Developing a personal/collegial relationship with your best customers could potentially scratch the itch for similar interaction, while actually getting good feedback about your company.