Many cheap juicers usually fail with wild herbs.
There are videos of plastic juicers that only squeak. You only buy an Angel Juicer once in a lifetime.
Pure wild herb juices are already extremely bitter. However, you can always add a little fruit or carrots. You don't need to drink more than 1 glass (250ml). It is absolutely amazing how full you feel after one glass. This is mainly due to all the minerals in the wild herbs.