Your content is great and informative. But your videos are not SEO optimized and the channel is not optimized properly. You have not used any video tags and channel tags. If you do these things right, you will get more visitors and people will like your content more.
@sanitaetshausschmieg I have audited your channel and found some issues. If you want we can talk about these and I can help you. Which will be beneficial for you.😊😊