@mineinmono With the caveat that it is a work in progress, these are the 8 lines that made it look better:

(set-face-attribute 'default nil :font "Iosevka" :height 140 :weight 'regular)
(set-face-attribute 'variable-pitch nil :font "ET Bembo" :height 160 :weight 'regular)
(menu-bar-mode -1)
(tool-bar-mode -1)
(scroll-bar-mode -1)
(setq inhibit-startup-screen t)
(set-frame-parameter nil 'internal-border-width 20)
(load-theme 'modus-operandi t)

Separately, for smoother scrolling:

(when (fboundp 'pixel-scroll-precision-mode)
  (pixel-scroll-precision-mode 1))

(setq scroll-conservatively 101)
(setq scroll-margin 2)
(setq scroll-step 1)
(setq mouse-wheel-scroll-amount '(1 ((shift) . 1)))
(setq mouse-wheel-progressive-speed nil)```