The simplest case is directly through the system itself.
If this does not help, and the videos you want are not in the basket, you can try downloading an application for recovering deleted files from Google Play. The ones that run from a PC work best, but there are also options directly for a smartphone, like the same Disk Digger Pro file recovery . Unfortunately, the most effective ones are paid.
More tips for smartphone users can be found here .
You can recover using the Undeleter and DiskDigger applications! But! If you have root access, they work. If not, restore only the sketches. You can recover from a memory card through Recuva or PhotoRec by connecting the card through a card reader to a PC. A possible way with Recuva is through taking a snapshot of the phone's memory.
Go to google photos, select the menu (the icon in the upper left corner), there should be videos that you can restore, the icons can be transparent, press and hold your finger on the desired videos, the "Restore" option should appear