Harry Kane's fifth-minute penalty was as good as it got for England, with Jakub Brabec quickly levelling and substitute Zdenek Ondrasek netting a dream debut goal late on as the Czech Republic secured a memorable 2-1 comeback win. "We'd much rather prevent a situation developing than try to manage it on the night and regret it afterwards".
"Our performance wasn't good enough, simple as that". We conceded possession too cheaply and particularly in the first-half we didn't create enough chances.
"We tried to change the shape in the first half but it didn't work as well as it might", admitted Southgate. "We accept defeat and accept we have to be better than we were".
Chelsea's Mason Mount may reportedly be promoted to the starting XI for England's senior national side.
England's defence will come under scrutiny again after another poor display following their 5-3 win over Kosovo.
"I think whatever the balance, we didn't use the ball well enough", said the England boss, whose side face Bulgaria in Sofia on Monday.
"We are always very realistic about where we sit".
"I think tonight was clear evidence of that".
'We have to respond in the right way'. We've got to get a response and it's going to be an interesting couple of days for all of us because we haven't had a result like that, we haven't had a performance like that and we'll learn a lot more about ourselves over the next 48-72 hours. We accept defeat, and accept we have to be better than we were. The second half was better, we had a couple of chances to put the game to bed and we didn't and unfortunately we gave one away at the end. "But we collectively have to accept the result and, as the manager, I've got to accept that as well, absolutely". They had the crowd behind them, sometimes the pitch is not as easy to play, but that's no excuse.
Following the match, England manager Gareth Southgate said: "Of course, it's always disappointing and I think I've always spoken about how we would want everybody to conduct themselves".