This is for the US.
Democrats are a political party that supports left wing politics (LGBTQ+, races, freedom of choice)
Republicans are a political party that supports alt-right wing politics (no abortion, LGBTQ+ is illegal, tax breaks for the wealthy, Christian nationalism)
A conservative is someone who supports right wing politics (smaller government and isolationism are some things that pop into my head about them) but aren’t always with the Republicans due to their alt-right policies.
Hope this helps, MSMG is very much leaning into the Alt-right from what I’ve seen.