Does ElasticSearch support lemmatization? If yes, then how can I search for docs using this?

I am using Python wherein I am searching for a string in a list of string using lemmatization (through SpaCy). I want to do the same thing for Elasticsearch but all the documents I have come across till now say that Lemmatization is not support in Elasticsearch. Instead the search algorithms supports stemming.

I want to know why lemmatization is not supported? And to use a particular stemming algorithm (to make the results similar to NLTK) how do I specify the algorithm in the search query?

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