Let me know, and I'll do my best to help!
Always use reputable sources (known community creators/Discord servers) to download mods. Avoid sites that require unnatural surveys or suspicious executable files (.exe). The best mods usually come as an ISO image or a patches (.xdelta or .ppf) file to apply to an original BT3 ISO. How to Install the Super Deluxe Mod (Dolphin Emulator) dragon ball z budokai tenkaichi 3 super deluxe mod link
Many sites hosting “Super Deluxe Mod” files bundle malware or adware. Even if you find a link, scan everything before running. Let me know, and I'll do my best to help