My recommendation is to keep it simple with supplements that are known to work:
1. Protein Powder and recovery drinks
3. Amino Acids (though most good protein powders have sufficient amino dosing)
Biotest has some very good and good tasting protein and recovery mixes. Most of the other stuff on that site you posted either won’t do what is says it will, or has the potential of containing banned substances.
Fabian, What events do you do? What is your current height/weight and ~bf? I wouldnt trust any thermogenic products. They will almost certainly contain banned substances.
I agree with Matt though stick with those basics, with two additions.
1. Citruline malate if you are a long sprinter and up.
2. Cordygen5 if your aerobic capacity is lacking. Makes aerobic work a breeze.