Can I use smart switches for my 3-way?
Yes, a smart 3-way switch can be installed.I have used this 3-way switch in the past. Additionally, with the new smart switches, in general, the use for 3-way IMHO is becoming obsolete. Most link to your smart home hub (i.e. Alexa Echo or Google Home) and you simply have to tell it to turn on or off. 

If you don't want a 3-way you could also get this alternative.