Never use websites with intrusive pop-ups. Stick to Reddit (r/PPSSPP, r/Roms) megathreads or the Internet Archive. Search the exact MD5 hash of a clean Tekken 6 ISO to verify authenticity.
You typically download a separate "TEXTURES" folder and place it inside the PSP/TEXTURES directory of your emulator. Where to find it: Communities on platforms like YouTube (e.g., Tekken Modding channels ) often provide direct Google Drive links for these customized texture packs. 2. Playing the Full TTT2 (True Emulation) tekken tag tournament 2 ppsspp file download link
If you want the authentic, full experience with the actual tag-team mechanics, you should use the RPCS3 Emulator on a PC to play the original PlayStation 3 version of the game. Never use websites with intrusive pop-ups