Sounds like you have already given up before even writing the post, to which I ask why write it in the first place? Apologies if I come off as rude just genuinely curious.
Everyone here has different effects off of different strains of kava. It's hard to judge what experience you will personally draw from one strain to another. There are also factors such as your setting, diet, how you feel emotionally, and numerous other determining factors that will play a key role in what you get out of a Kava.
You mentioned trying Kava at lunch, I'm assuming at work? Maybe a workplace setting may not be most suitable for you. For me my anxiety throughout a workday is decreased dramatically by lingering effects from the kava session the night before. Kava candy is a simple way for quick anxiety relief for me throughout a work day. You can easily purchase it through Amazon if interested.
All kava strains are different. While I don't personally like to compare Kava to anything else, it is similar to cannabis purely in the fact that there are many different chemotypes that can range widely in effects.
Obviously most members of this forum are going to have a bias towards kava, but for good reason. It has changed the life's of many of the forum members in positive ways. For me it was simply a healthier alternative to drinking a few times a week with the added bonus of anxiety relief. I still enjoy a nice glass of scotch on occasion but it's no longer an unhealthy habit. I truly hope you find what you are looking for. Try a couple other strains and try having your Kava sessions in a relaxing environment.
Bula