I had to search for the original wallet a bit, since the new version's wallet is in the obvious place. It was in snap/electrum/2/.electrum/wallets

However my output is not clear, briefly the side headings are:

"accounts", then a list of 03 & 02 pairs (6 key string pairs)

"receiving", then a list of 03 & 02 pairs (22 key string pairs)

"xpubs", then my xpub67...U, and xpub661...F 

"accounts expanded"
"addr history",  then a list of 13 short ones, 3 longer ones, 15 short ones

"labels",  then 1 short key string

"master private keys"   "x1/"    then a  very long string about 1.5 times the length of an xpub key, with '/', '+' and '=' symbols. The letters 'xprv' are not in the key strings between these (long and short) anywhere

"master public keys"  x1/ & x2/ ...(xpub67...U, and xpub661...F )


And then various strings that follow the following
"payment requests"
"pruned_txo"
"seed"
"seed version"
"stored height"
"transactions"
"txi"
"txo"
"use encrytpion": true
"verified_tx3"
"wallet_type":  "2of2"
"winpos-qt"
426
1052
840
419

You can see it is not like the output you have Abdussamad.
I even tried to use this strange looking key once before, in an attempt at restoring my wallet. It just was not accepted.
I have have not attempted to do anything else you suggested as yet.


HCP

I think I may already have attempted to create a new wallet (many times in fact) and to either sweep the old wallet, as previously mentioned, and of course, tried to send coins there.  I cannot move my coins, they are 'stuck' in the Linux wallet.

So this leads us to trying to extract master private keys. "x/1" is shown but not of the expected format. "x/2" is not, but the xpub keys for both are.


[When I set the account up also also copy and pasted for safekeeping a string I have found since untraceable or unrecognisable. It is not 108 keys following xpub or xprv
It is xwod6xxxxxxxxxxxxxxxxxxxxMWy1rS6ruMsxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxg  ..it is just 97 keys long in total]