Installing and upgrading help

Reseller is our contracted IT services company I believe, am following up for more details. Very busy people - response times not always fantastic.

Ended up uploading the files via the file manager in cpanel (seemed easier than doing via terminal)

uname -an

Linux p3plzcpnl476739.prod.phx3.secureserver.net 2.6.32-954.3.5.lve1.4.82.el6.x86_64 #1 SMP Tue Mar 16 17:47:27 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

free
total used free shared buffers cached
Mem: 74231184 70321620 3909564 4729600 3506136 46893320
-/+ buffers/cache: 19922164 54309020
Swap: 0 0 0

df -h

df: cannot read table of mounted file systems: No such file or directory

Nothing in the PHP about WHM or anything
"[PHP]

;;;;;;;;;;;;;;;;;;;
; About php.ini ;
;;;;;;;;;;;;;;;;;;;
; This file controls many aspects of PHP's behavior. In order for PHP to
; read it, it must be named 'php.ini'. PHP looks for it in the current
; working directory, in the path designated by the environment variable
; PHPRC, and in the path that was defined in compile time (in that order).
; Under Windows, the compile-time path is the Windows directory. The
; path in which the php.ini file is looked for can be overridden using
; the -c argument in command line mode.
;
; The syntax of the file is extremely simple. Whitespace and Lines
; beginning with a semicolon are silently ignored (as you probably guessed).
; Section headers (e.g. [Foo]) are also silently ignored, even though
; they might mean something in the future.
;
; Directives are specified using the following syntax:
; directive = value"

Thanks for the support thus far - am on a steep learning curve.