If You Always Want To Collect A Ralts In This Game Then Here Is How When You Get Your First Pokemon Keep The First State Reducing Move It Knows And When You Make It To THe Part Where wally Gets Ralts Remember Where He Was Standing And Keep Going Until You Can Purchase PokeBalls In The Pokemart Then Catch a Wurmple And Train It To Level 6 At Most And Then Keep It With You Dont Catch Any Other Pokemon After This (If You Must Store It In The PCRight After) Now When You Save The Devon Guy And Get Devon Goods Take The Route To The sailors House And Before You Depart Go To The Area Where Wally Was Standing and Just Move Around In That Area And He Should Appear Very Quikly

The Reason Its So Hard To Catch At The Beggining Is Because Your Pokemon Have To Be Very Close To You Ralts Only appears To THose Who Have a Positive Dispostion Meaning Their Pokemon Have To Like Them Alot.