It can happen.
We viewed a few houses to see what we could get for our money. Found a nice one, no chance of getting it as ours wasn’t on the market but at least we knew there was stuff out there that met our expectations.
Spent a couple of weeks sorting ours out, put it on the market, before it even got onto Rightmove the agent sent a couple to view it using the old ‘its not on the market yet so get in there quick’ trick, and we sold it to them a few days later for near enough the asking price.
Quick second viewing on the house we’d already seen, second offer accepted and a fair bit less than we expected to be pushed up to.
Obviously it went a bit downhill from there with demands from the other vendors, but the actually selling and buying was over before we really started!
Good Luck 🙂