If you absolutely do not want to patch it yourself, and you possess a commercial license, some dedicated Amiga forums maintain "patched boot ISOs" that include the latest 3.2.2 updates, AHI sound drivers pre-installed, and RTG (Retargetable Graphics) support.
Navigate to Patch_Project/S/ and open the file Startup-Sequence in a text editor (Notepad++ works). amiga os 32 iso download patched
Buy the official OS 3.2 from Hyperion (to support development), then download the "Gulliver Patcher Script" from GitHub. Run the script, point it to your official ISO, and let it generate a custom amiga os 32 iso download patched tailored to your exact Amiga model. Your vintage machine will thank you. If you absolutely do not want to patch