Hello Gucci and welcome.
Don't be disheartened - a lot of things are now listed as NLA - no longer available - for our A2s. Such things as suspension parts are however still available from new from third parties, who in most cases provide equal if not superior quality to the original items.
In terms of springs, you've got a lot of choice, Weitec, Sachs, Monroe, Eibach and my favourite, Bilstein. Have a browse of these pages and get a feel for what others have used and what you want - comfort, performance, lowering etc.