Vadim Bogaiskov

Media file (image) does not contain field for title attribute, only for alt attribute.
Plugin add text into title attribute from alt attribute when image is inserted into post if title attribute is empty.
As alternative see plugin <a href="https://wordpress.org/plugins/restore-image-title" rel="ugc">‘Restore Image Title’</a> by Les Bessant. 
The ‘Restore Image Title’ inserted the post title into title attribute.

Title like Alt

Restores the title attribute from Alt attribute when images are inserted into posts

natekinkead

When you upload a new image in WordPress, this plugin will use the file name to automatically fill in the Title, Alt text, Caption fields, and Description so you don’t have to do it manually.

Image Automatic Alt Text and Caption

Automatically fills in the Alt text, Caption, and Description from the image file name of new image uploads.

Title like Alt vs Image Automatic Alt Text and Caption