Yeah, the only real tactic is to invest 90+ days OUTSIDE of the Schengen zone, and never enter for even a moment throughout that time out. Rather rigorous, and the options are quite constrained. Most of the non-Schengen nations around the world can also be involved with the Russia-Ukraine factor, https://rivercckkh.blogsvila.com/35030928/a-simple-key-for-us-driving-licence-unveiled