In Pokemon Sapphire, Ruby and Emerald do I need to catch alot of pokémons to get important items?

Question

Like in Red, Blue, Yellow, Fire red, Leaf green that you need a determinated number of caught species to have acces to some important items like exp share for example.

Comments

It is not that difficult to use proper grammar.
What are you trying to say?

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Do you mean "do" i need to catch them all

Answer 1

Nope, you don't. All items in Sapphire are gifted free, picked up or bought.
Hope I helped!