Keith Downing insists his England Under-19s side will learn from their mistakes after a dramatic 3-2 defeat to Wales in Saturday's UEFA European Championship qualifier.
Nathan Broadhead and Mark Harris put Wales into a 2-0 lead in Bangor before a spirited England rallied in the second half.
A brace from Liverpool's Trent Alexander-Arnold saw the Young Lions draw level, giving away fans hope of a remarkable comeback win.
Wales 3-2 EnglandUEFA European U19 Championship
First Qualifying Round
Saturday 12 November 2016
By Jonathan Drury
But Everton striker Broadhead struck again 16 minutes from time to give Wales victory and Downing was left frustrated with parts of his side’s performances – although he admitted there were plenty of positives to take.
"I can take bits out of it, and that's football sometimes you don't get what you deserve," he said. "We had a lot of play but Wales created some good chances and the bottom line is we've got beat.
"We need to dust ourselves down now and make sure we beat Greece on Tuesday.
"It was disappointing because we got back into it, clawed our way back to two each but we didn't have enough composure in the final third.
"We made silly errors and individual mistakes and I've said to them you get punished for that at international level.
"We've got quality, it is competition and the lads need to learn about European football and how to manage games.
"Now we dust ourselves down and put in a performance on Tuesday."
England started brightly at Nantporth as Chris Willock was denied early on, before Wales’ former England U16s player Ethan Ampadu almost turned a cross into his own net and Stephy Mavididi went close to lobbing goalkeeper Fergal Hale-Brown.
Wales saw a penalty appeal for a foul on Broadhead waved away in a rare attack, with England laying siege to the Welsh goal for much of the half.
But the hosts took the lead 15 minutes before the break as Broadhead scored a penalty, after Ben Woodburn went down under a challenge while trying to reach a loose ball in the box.
Wales grew in confidence as the first half went on when Tyler Roberts was presented with a golden opportunity which he dragged wide, but a cagey game burst into life in the second period.
Downing’s side were stung on the break again as Broadhead crossed for substitute Mark Harris to slot home with his first touch to give Wales took a two-goal lead.
However this sparked England into life and they responded immediately as Alexander-Arnold's cross-shot from the right deflected past Fergal Hale-Brown to set up a fascinating final half-hour.
The Young Lions then levelled from the spot 17 minutes from time as Dujon Sterling was brought down in the box, leaving Alexander-Arnold to slot home the penalty for his second of the evening.
But another twist was to come as Broadhead fired home from ten yards out for Wales, before Ro-Shaun Williams was dismissed for a second booking late on.
England next face Greece in Rhyl on Tuesday night.
England U19s: 1 Aaron Ramsdale (Sheffield United), 2 Trent Alexander-Arnold (Liverpool), 3 Jay DaSilva (Chelsea), 4 Tom Davies (Everton) (c), 5 Ro-Shaun Williams (Manchester United), 6 Trevoh Chalobah (Chelsea), 7 Dujon Sterling (Chelsea), 8 Tayo Edun (Fulham), 10 Chris Willock (Arsenal), 11 Ryan Sessegnon (Fulham), 15 Stephy Mavididi (Arsenal).
Substitutes: 18 Lukas Nmecha (Manchester City) for Mavididi 63, 9 Rushian Hepburn-Murphy (Aston Villa) for Sessegnon 74, 17 Andre Green (Aston Villa) for Alexander-Arnold 81.
Subs not used: 13 William Mannion (Hull City), 12 Darnell Johnson (Leicester City), 14 Easah Suliman (Cheltenham Town, on loan from Aston Villa), 16 Samuel Field (West Bromwich Albion)
Goals: Alexander-Arnold 62 ,72 (p)
Head coach: Keith Downing
Wales U19s: 1 Fergal Hale-Brown (Norwich City), 2 Cameron Cole (Cardiff City) 3 Cole DaSilva (Chelsea), 5 Ethan Ampadu (Exeter City), 6 Regan Poole (Manchester Unted), 7 Ben Woodburn (Liverpool), 8 Matthew Smith (Manchester City), 9 Tyler Roberts (Oxford United, on loan from West Bromwich Albion), 10 Nathan Broadhead (Everton), 16 Aaron Lewis (Swansea City), 17 Rhyle Ovenden (Watford)
Substitutes: 11 Mark Harris (Cardiff City) for Woodburn 57, 4 Jack Evans (Swansea City) for Broadhead 86
Subs not used: 12 Adam Przybek (West Bromwich Albion), 13 Liam Cullen (Swansea City), 14 Keiran Evans (Swansea City), 15 Ryan Leak (Wolverhampton Wanderers), 18 Ryan Harrington (Everton)
Goals: Broadhead 34, 74, Harris 60
Head Coach: Geraint Williams