Fg committed improving economy osinbajo

I think there may be a small mistake in your sentence. It seems like you meant to say "FG committed to improving economy under Osinbajo".

If that's correct, here's a possible completion of your sentence:

The Federal Government (FG) has committed to improving the economy under the leadership of Vice President Yemi Osinbajo.

In this context, "FG" is an abbreviation for "Federal Government", and "Osinbajo" refers to Yemi Osinbajo, the Vice President of Nigeria.