Welcome to the community!
Which hosting (Cloud/server) option are you using?
If the ticket has been deleted then it's gone you can't find this in Jira. If its a server then you can find the deleted issue details in atlassian-jira.log files.
Its located in <JIRA_HOME>/logs directory, you can find in log files something like
Catch up with Atlassian Product Managers in our 2020 Demo Den round-up! From Advanced Roadmaps to Code in Jira to Next-Gen Workflows, check out the videos below to help up-level your work in the new ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events