Most places (cafe's, coffee shops, quick services, etc.) have Sweet & Low, Equal, and Splenda. Sometimes they'll be re-branded with other names on them, but it's the same idea. Pink, Blue, and Yellow packets.
I've never seen Stevia anywhere. I don't think Stevia has quite caught on yet, but it took Splenda a long time to catch on.
If Stevia is your choice (it's mine with Keto), you should bring your own.