"Hopefully we can use those lessons next season in the Championship.
"We have gained a lot of experience over nine months and it has made them better players."
The Baggies are bottom of the table on 31 points, having won only eight top-flight games, and Mowbray stated: "We have not won enough and we are where we are because the league table does not lie.
"Good players win you matches. That was evident today from Liverpool. I have got to continue building, keep going, improve it bit by bit.
"Good players are not easy to come by. We are in a market where we can only afford young players and inexperienced players. We just have to give them time to develop."
Regarding the game against likely league runners-up Liverpool, Mowbray was left to rue his side's defending.
"Obviously, I am so disappointed, particularly for the fans who have been magnificent all season," said Mowbray.
Keeper Kiely remains optimistic over the future for West Brom
"But the way we gave away that first goal, a big mistake to let Steven Gerrard in, just epitomises our season.
"We had a lot of good attacking play but gave the opposition a goal they did not have to work for. That's us."
Goalkeeper Dean Kiely, who signed a new one year contract in January, believes the fans' applause for Mowbray following the Liverpool defeat reflects the overall support for the boss, despite relegation.
"That was refreshing. Everybody in and around the club believes what the manager is trying to do in terms of his vision and how he wants the club to progress," he told BBC Radio Five Live.
"West Brom have shown over the years that we can get into the Premier League but have struggled to stay there.
"What we're trying to do is not just stick a plaster on and hope it works. We hope to build a squad with good personalities and I think the manager is well on the way to doing that."
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