As a fellow follower of a small country, I appreciate your empathy.
As I've mentioned in other threads, Wales have very limited options to change things when the opposition get the first goal.
I have lived in England for over 45 years, so am not an expert on the Welsh national team.
Rob Page was the u-21's coach until the Giggs course case. I do not even think he was the #2. His managerial skills will have been tested especially tonight.
The Welsh FA could have appointed a more experienced (short-term) manager. Or, Giggs could have walked away, allowing a longer-term manager to take charge for this tournament and the 2022 World Cup campaign. But surprisingly, Giggs maintains his innocence ?
Also the Welsh FA have a long history of being a bunch of risk-averse dinosaurs.
A national team manager usually has a limited choice on who to select.
England are currently one of the few teams who could take a risk and play the youngsters ( e.g. Foden, Mount, Saka, Sancho, Bellingham, Reece James) against Germany. This would be a great experience for the 2022 Qatar World Cup.
Hopefully, they pick at least 3 of the above.
As regards my team, Wales would usually lose to Denmark c.7 times out of 10.
Tonight, Denmark were excellent, fully deserved their win and will be an awkward opponent in the Quarter Finals...