So many questions

I'm on season 6 - I loved the earlier seasons but never got this far until now. I'm honestly confused. Why does this show abandon so many story lines and so many characters? Some of my questions:

1. Is rivervale confusing to anyone else or am I just dumb? I actually kind of enjoyed the episodes and the whole bomb storyline but now that it's back to riverdale I'm kind of confused.

2. Is Archie a superhero now? HUH? I fear we've lost the plot

3. Did Veronica really have her dad killed? Seems so out of character ....

4. Are sierra and sheriff Keller still married? Where is she???

5. Why did FP suddenly disappear when he was such a main character ?!

6. Where are the twins? Occasionally they're seen at Cheryl's house or at Alice's house but not much at all....

7. Archie's mom is a horrible actress, I cringe every single time she's on the screen, does this bother anyone else ??!

8. What was the point of the time jump when they all still act like high schoolers ?