"Is there any chance to get a 32bit version of Runtime 9.0.1?"
Yes, you could purchase Mathworks itself (the entire company) and order them to develop it. Mathworks is, however, a private company that is not known to be for sale.
I also like to say that offering Mathworks a $US 5 million non-refundable deposit will get you a meeting to discuss your request. Perhaps they'd be willing to develop the version for (say) $US 45 million.
But short of these things: NO. Mathworks actively intends to never produce another 32 bit version. For example, you should expect that there is effectively no chance that Mathworks will ever create MATLAB to run natively on Arduino or Raspberry Pi -- not until 64 bit versions of those become available.
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