https://github.com/abo-abo/avy#avy-goto-char-timer is excellent for jumping to any text you can see on screen.

isearch and occur are excellent for jumping to specified text anywhere in the buffer.

imenu and xref-find-* are excellent for jumping to specific definitions in the buffer.

Or did you install Emacs on the server you SSH'd into?

That one, I believe. Eliminating Tramp from the equation is an easy and effective way to avoid Tramp-based overheads!

Unless your network connection is very slow or otherwise issue-prone, in which case ssh may not be responsive -- at which point Tramp offers significant advantages by only occasionally requiring network activity.

I use sticky modifier keys at the OS level. No need for any Emacs config, and I get the benefit in every program.

I'm not sure what that means, but forward-sexp, backward-sexp, and backward-up-list are good for navigating across and within balanced expressions.

FYI on GUI frames the indicators appear in the fringe, and can be configured like so:

(push '(truncation nil nil) ;; no truncation indicators
      ;; '(truncation nil right-arrow) ;; right indicator only
      ;; '(truncation left-arrow nil) ;; left indicator only
      ;; '(truncation left-arrow right-arrow) ;; default
      fringe-indicator-alist)))

/u/AkibAzmain has your solution for terminal frames.

For more info:

• C-h i g (emacs)Line Truncation
• C-h i g (elisp)Truncation
• C-h i g (elisp)Display Tables