Out of curiosity, what is the limiting factor of the free tier on Zapier for you? You need more that 100 runs per month, or you need multi-step workflows?
Perhaps https://www.integromat.com/en/ would work for you.
Perhaps https://www.integromat.com/en/ would work for you.
edit: looks good, I was able to create the same flow and the free tier is more generous! Thank you!