Pyle Adjustable Speaker Wall Mount Brackets - 2 Pack Extendable Steel Arms for Center Channel, Small or Large Speakers & Soundbars - 110 lbs Capacity, 6.7-11.8" Depth - Includes Mounting Hardware

Why can't you drill into the wall? The damage would be tiny and easy to repair if you ever need to. I would go with a wall mount solution like this: https://a.co/d/05DrA52p because it will be the most stable. If drilling is definitely not an option, consider something like this: https://vivo-us.com/collections/speaker-mounts-and-stands/products/mount-spsb5