The root chakra is all about the physical plane. Focus on your physical reality. Meditation is one way to open your chakras, but it's not the only way. Although there's a misconception about meditation as well. Every time you realize you're not focusing, just pull your mind back. And that's actually the meditation. Every time you pull your mind back your training it, so you're actually doing better than someone who just stays focused the entire time.

Me too, I’ve found meditating a deeply overwhelming experience. When I finally got diagnosed it all made sense! What works for me is moving meditation. Walking meditation is the best, there’s actually an exercise here by a Buddhist monk. Or staring at a candle, body scan meditation or meditating with beads etc. anything that can keep my body and mind busy, helps me! Hope this suggestions are useful.