Another vote for Discord. I mostly see it used to text chat. The vast majority of servers are not dating focused.
A caveat...I'm also in my 30s. Unfortunately, most Discord servers are filled with teens. But there are plenty of servers with adults in them as well. Just search for keywords like "21+," "25+", or "30+" and you're golden! Again unfortunately, it means you generally have to just look for a general purpose, age limiting server instead of ones based on hobbies or location. But works fine enough for chatting.
I am part of many servers, but I actually only talk to one that is made specifically of online friends I met in the days when forums were popular. But one of the servers I have in my list is for 25+ and seems pretty chill. I've never really chatted in there, but I can send you a link to it in a DM if you're interested.
Edit: I have nothing against teens. It's just awkward considering you're in vastly different life stages. It also just feels a bit creepy to me.
Congratulations, man! :)