Hi and welcome. It sounds like tactile grounding techniques don't help you but there are other kinds to try. Intellectual ones help me a lot. Counting objects in the environment works well for me (counting books on the shelf, panes of glass in all the windows in the room, number of ridges on a cushion, anything really). Talking about my job tends to call forth a very grounded part in me so that's good too. Certain movements work for some people but not so well for me.
If you research on the net you will probably find lots of other non-sensory grounding techniqes like controlled breathing, tapping, visualization and things like that.