a watch-only wallet is just that. you can't spend from it because it doesn't have the seed or any private keys. that's why when you open a watch-only wallet you get a warning telling you to make sure that you have the seed or private keys recording somewhere.
without the seed or private keys there is nothing that can be done.
But in transaction history I see that I used to deposit and withdraw from that watch-only address. How that was happened do you have any idea?
It is because you deleted the info regarding the address; you no longer have the seed or the private key, so you can't use the address.
Did you have the private written on a file before? You might try to recover the file that you deleted?
https://answers.microsoft.com/en-us/windows/forum/windows_vista-files/how-can-i-recover-deleted-files-with-shift-del/13b1eaad-d41a-4e77-91c5-f0bc9590de7d?auth=1Ok I just remember how I used to take coins out of that address. Litecoin core was the first crypto software I have downloaded and since downloading the block took so long I downloaded Electrum and got private key out of Core console and sweeped into the Electrum. But after sweeping I uninstalled the Core. Do you think is there anyway to see transaction history or sth like that on Electrum. Because I used private keys to sweep into electrum before which I never saved. Thanks.