Weird, that should be fine. What brand of soap? Does it leave sticky residue on your fingers?
You could try some grip tape: https://www.amazon.com/dp/B08LYH1C52/ref=cm_sw_r_apan_i_Z75GJQ63D0BGFJ62VZKZ
Or maybe some talc powder to cut the stickyness? Idk, thats a weird one for sure.
Try this [Grip Upgrade] Hotline Games 2.0 Plus Anti-Slip Grip Tape for for Logitech G502 / G502 Wireless Gaming Mouse, Professional Mice Upgrade Kit,Sweat Resistant,Cut to Fit,Easy to Use https://www.amazon.com/dp/B08LYH1C52/ref=cm_sw_r_cp_api_glt_i_J49JDRCWJA3Q0FA5H248?_encoding=UTF8&psc=1
https://www.amazon.co.uk/dp/B08LYH1C52/ref=cm_sw_r_cp_apa_glt_fabc_W0ETC85Q2PD07VDEW2MG
You could try that, has decent enough reviews