Clagers of the chain at a deeper F650GS (2008)

Servus from Bavaria! Just as a preliminary information, I only had the driver’s license and the BMW since 22.12.09, i.e. bloody beginner. I hope also here the motto applies: There are no stupid questions only stupid answers. My baby I drove for the first time in March and then immediately noticed this loud clinker when I took the gas out. At first I thought I drove them from time to time undertoured( 2000 in the village e.g.) but this noise then also occurred at higher speeds (3000-4000) Every time I took out the gas. Somehow I came up with the idea it could be on the chain. So I had it tightened up. (She was actually too loose) The sound was almost gone. But it still appears in the lower speed range, but not so loud anymore. Do I just have to accept it because it’s deeper and the chain, when the load is gone, is somewhere in contact with a disguise unknown to me? Does anyone have a good tip for me? Unfortunately, as a woman you are not really taken seriously at the motorcycle dealer. Or did I end up with the wrong one? I can’t imagine that the chain relaxes after 5 times on a game of 5-6 cm. Thank you already marina-lupus