Is reti opening good???


I think it's a little offbeat, never played it myself. If you have fun with it and don't think it's holding you back, why not play it?

I play Reti for couple of weeks now, only for a change... And I wouldn't recommend it to a beginner. Big downside is that you surrender the center to your opponent and leave him with many good options to respond with and that makes it way harder for you to prepare or memorize anything (for future games), because every game will be completely different and very likely chaotic and wild too.
Yes, Reti is good. Example:
https://www.iccf.com/game?id=1360141