The answer is no. Currently, there is no option of making video calls to friends or relatives using Telegram. You can send video messages. to send video messages go to chat mic swish into camera. then hold camera and record video and send.
Alternatively, IF YOU INSTALL VIDOGRAM YOU WILL BE ABLE TO DO VIDEO CALLS
JUST ENSURE YOU USE THE SAME PHONE NUMBER WHICH YOU USED FOR TELEGRAM
INSTALL VIDOGRAM BELOW: