>>46559033RSE=FRLG>SM>USUM>GSC>RB>HGSS>BW=B2W2>DPPt>XY>ORAS
I don't think there are any bad mainline pokemon games. It's all just preference. I haven't played the switch games because I'm a dexcutfag.
Where to start:
>RB/FRLGThe beginning is not a bad place to start. It has its limitations but the charm is undeniable. FRLG is more accessible, simplified, and modern but it lacks some of the charm of the originals.
>SMIf you want something different and relaxing you can try SM but most people hate them because they are handholdy with lots of unskippable cutscenes. These claims are true but I feel they are blown out of proportion. Every pokemon game holds your hand and I think SM has the best story and characters in any pokemon game. At least the negativity keeps the price down so it's a great deal if you are looking for a bargain.
>HGSSAs you can see from this thread it's considered one of the best if not the best pokemon game by many. Like I said I don't think there is a bad mainline pokemon game but I feel HGSS is a downgrade compared to the originals. It's modern but lacks all the charm of the originals.