Wainwright will be buoyed by winning at the Cardiff City Stadium after being involved with the football club as a junior.
Wainwright never managed to play in an official match at the home of Cardiff City football club, so admits he is content with winning at the venue as a Welsh rugby performer.
"It was a different stadium to play in, a first time doing that internationally, which was something I enjoyed," said Wainwright.
"It was a great occasion, still really loud here, so massive thanks to all the fans that came out and made it a good occasion."
It was the first time Wales had won back-to-back Tests since the 2023 World Cup and it also represented a third successive victory following the uncapped international win against the Barbarians last weekend.
This mini revival comes after Wales experienced only two wins in 27 internationals between October 2023 and March 2026.
"We need to just keep building on the wins," said Wainwright.
"It starts to become a habit and the belief starts to build.
"I remember speaking when we were going through the middle of that poor run of form and the losses were adding up.
"We probably had guys coming into the team with not very much international experience.
"We've ridden that wave and hopefully are maybe starting to come out the other end of that."