Gas chromatography is for relatively non-polar compounds and those extracts with alcohol or hydroalcoholic ones are very polar. GC-MS analysis of polar compounds can be done if derivatised to make them non-polar – For example, fatty acids and alcohols derivatised to be made esters. If you don’t know what to expect in this hydroalcoholic extract, GC-MS is not an ideal methodology of analysis.
Your extract is a mixture of a large number of polar and non-polar compounds, it is NOT easy to detect all these compounds. It is better to fractionated using liquid- liquid extraction.
You can do GC-MS analysis of both polar and non-polar crude extracts. In polar extract you get primary metabolites and in non- polar extract secondary metabolites.
The thing which matters in GCMS analysis is its column. So, its better use semi polar column so that you can do comprehensive profiling of metabolites