Albion’s five-match winning run was brought to an end in horrendous conditions at Brickfields, with Ionians winning 17-7.
It was Matavesi’s first defeat since starting a game following his return to Albion in November.
“It was not great,” admitted the Cornish-born flanker after Saturday’s loss. “Hull came with a game-plan and they played their game-plan a lot better than we did.
“It was very basic what they did – get good clean ball and pressure us by kicking – but at the end of the day it’s got them the win.
“We tried to play too much rugby and we put pressure on ourselves.”
He added: “It has been going well, but now it is about how we adapt next week.
“We have to get on with it. We have to look at ourselves and think we could have done a lot better (on Saturday). When we were in positions to score points we could have scored them.
“But next week is a whole new week and we have to look forward to playing again.”
Matavesi, though, admitted the team were really disappointed to lose in front of their own fans on their first appearance at Brickfields for a month.
“There was all the hype of us winning five from five and winning away from home where it is a lot harder,” said Matavesi. “Coming back home the boys wanted to put on a performance for the crowd and everyone from Plymouth, but, unfortunately, we could not quite do that. It was not great.”
Conditions did not suit Albion on Saturday, but Matavesi says they have to learn to be able to play them better.
“It does affect everything that happens and what you do, but if you are a good team you have to be able to play on good and bad ground.”
Albion face a tough trip to Fylde this coming weekend. They were only beaten by one point away at leaders Richmond on Saturday.