Vogel's Sound 3550 soundbar Mount | Also fits Bose Soundbar 500/700 | Sonos Arc/Ultra/Beam/Playbar | Samsung | Sony | LG and JBL | Mount for VESA 100 to 600 | Black | Max. 14.3 lbs (6,5 kg)

The setup you have is the standard for mounting a TV and soundbar together. I also wouldn’t recommend mounting your soundbar directly on the wall, as cable management can become difficult. The way your Hama soundbar mount can be adapted to the swivel TV wall mount looks very similar to my Vogel’s mount: https://amzn.to/3eKWEvd It should therefore be compatible with their products as well. I can personally recommend Vogel’s mounts, as they have the highest quality: https://www.vogels.com/en-gb/c/tv-brackets/full-motion