9.20.3 Can you answer these questions?

9.20.3.1 Moving from pdfLatex to LuaLatex makes my titles bold

https://tex.stackexchange.com/landing/r/digest?cta=question&id=680687

I want to switch to LuaLatex from pdfLatex. My only problem right now, it makes all my titles bold, I want them 'thinner' again. 
So, here's how it looked with pdfLatex before the switch: 
And this is ... 
[fonts] [pdftex] [luatex] [titles]
 

asked by Latex User 101 https://tex.stackexchange.com/landing/r/digest?cta=user&id=293617 Score of 1

9.20.3.2 pgfplots line does not show up

https://tex.stackexchange.com/landing/r/digest?cta=question&id=680671

I am trying to draw a line of best fit through my data, this is what I am trying to do. 
\documentclass{report} 
\usepackage{amsmath} 
\usepackage{graphicx} 
\usepackage{enumerate} 
\usepackage{tabularx} 
\... 
[pgfplots] [plot] [graphs]
 

asked by ArjunSahlot https://tex.stackexchange.com/landing/r/digest?cta=user&id=293194 Score of 1

9.20.3.3 Show every author in bibliography with natbib

https://tex.stackexchange.com/landing/r/digest?cta=question&id=680685

I am writing my thesis. I use this code for my bibliography: 
\documentclass[12pt,twoside=off, 
bibtotoc,liststotoc,appendixprefix,paper=a4,headings=small]{scrbook} 
\usepackage{apacite} 
\usepackage{... 
[bibliographies] [citing] [natbib] [author]
 

asked by PizzaSlice https://tex.stackexchange.com/landing/r/digest?cta=user&id=290290 Score of 1