Hi Koy, believe me I know your mud struggles. What I made last week, I installed a splash guards I bought online https://parts.subaruonlineparts.com/oem-parts/subaru-splash-guards-j1010fj200vw?c=bD0xMyZuPUR5bmFtaWMgU0VPIFBhZ2U%3D.
They are easy to install. They can protect your car from mud, stones, and road grime. I think it’s worth it.