Hey there Blondie.
Horde as a faction is still the smaller side and it can be quite noticeable, however the RP scene has picked up with the release of Dragonflight, with old guilds coming back and renewed interest for both old players and new. It is still guild orientated but there are considerable efforts by people to make faction-based events and hubs to RP in.
There’s the Fireside Gathering which happens every month and this brings in a lot of people. The Fireside Gathering (Horde Monthly Social)
There’s Social Sundays where folks gather up in the Valley of Honour in Orgrimmar for casual RP and this has been doing very well each week.
And there’s also the Crossroads RP Hub which has done very well and brings people together on a bi-weekly basis, though it is open to casual RP all the time if people want it. Info here: [H-RP] The Crossroads - RP Hub 🏜
I also recommend joining a discord or two to help make connections. The Horde community one is lovely and I can share the thread here. Casual Horde RP Community & Discord Server
My recommendation is to find a guild if you want consistent RP but there are more options than before to finding casual stuff as well. Orgrimmar generally is better than it was.
I hope this helps. 