Hi @Tat_yana welcome to the Atlassian community forum and I would be glad to assist you.
To answer your query, Jira don't have built in Gantt chart. Having said, you may use Jira roadmap feature for tracking
Alternatively, access these plugin links (free trial) from Atlassian Market place to add to your Jira software.
Here's the official Atlassian link with the list of Jira add-ons:
If my post answer your query, kindly click "accept answer" for the benefit of new members.
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