Germany replaced almost all of it with gas from Netherlands, Norway and USA.

This is partially true.... The Netherlands have been the 1st nation to adopt natural gas in Europe, more than 100 years ago, and set a lot of standards for it, mostly because they found a NG source on their territory ... but this source is almost depleted now, and they are almost non producer .... what they have though is CNG terminals for ships to unload the gas... import infrastructure.... the top image with the price is from the TTF exchange in Netherlands, the main trading hub in EU.

Norway does have some NG in the seas, but still not enough.

The US are sending ships to Europe, but this is very market driven, if prices are better in Japan or China, the ships will go there.

Recently Germany signed an agreement with Qatar, that is the number one producer for NG in the world .... and this is huge... not sure about the quantities though.

One very important thing in the Germany NG infrastructure are the HUGE gas storages they have, and have added new ones in the last year, that give them a lot of flexibility to balance the demand.

And for the end, this winter has been a blessing for the EU with the hot weather, and the storages have remained full above 70%, that is crazy for this time of the year, and basically there is excess gas all over the place.