advice for new set of golfclubs

Hi, i'm looking to buy my first complete set of golf clubs. I've played for a year, so i have a very limited knowledge about what to look after and which sets are good.

I'm a 27.6 handicap, 190cm (can i still get standard height sets?) and have a budget of 200-300 dollars.

Currently i have the Callaway x20, however the pitcher is broken and the replacement is a random wilson club which is way different from the x20s.

Hope you guys can help and say what set helped you when getting down in handicap.

Kind regards and thanks in advance.