If you scour the internet looking for a download link for a 32-bit version of RPCS3, you will inevitably come up empty-handed. The developers of RPCS3 have been clear on this subject for years:
Another challenge is the lack of support for certain instruction sets, such as SSE4.2 and AVX, which are used by rpcs3 to improve performance. Many 32-bit processors lack these instruction sets or have limited support for them, resulting in reduced performance. rpcs3 for 32 bit pc