There is no evidence that the Liberian President encouraged Trump to keep practicing English; rather, Trump praised the Liberian President's English, which caused confusion because English is Liberia's official language.
Liberian President encourages Trump to keep practicing English

FactVerify
Source: factverify.com
What the Evidence Shows
The claim states that the Liberian President encouraged Donald Trump to keep practicing English. However, the search results consistently report an incident where President Donald Trump praised Liberian President Joseph Boakai for speaking "such good English" and asked where he learned it, despite English being the official language of Liberia. This remark by Trump was widely noted as awkward and confusing, as it implied surprise that the Liberian President spoke English well.
None of the sources mention any response from the Liberian President encouraging Trump to practice English. Instead, the focus is on Trump's comment and the reaction it elicited from observers and Liberians.
Therefore, the claim that the Liberian President encouraged Trump to keep practicing English is not supported by any of the available information and appears to be false.