Some tips from someone who is alone a lot of the day and doesn't get to travel very far to see friends and family.
For those of us with the technology to do so, applications like skype and facetime can give you some seeing/hearing time with your friends and relatives without that contact. Discord, Whatsapp and other chat programs work well to keep groups connected casually. Chatting in forums and focused groups can help, but won't entirely, meet your social needs.
There are simple party games you can play as groups online like Jackbox that even grandma can play as long as she has a smartphone, tablet or computer.
More open world action games like Minecraft might be surprisingly interactive if you're willing to give them a chance with friends. Small game server rentals for groups of friends are only $5 a month.
Family game night is always good (support your local game stores to buy games if you can) and I'm still happy to make suggestions to people who want em for good modern board and card games for your family of any size that put milton bradley to shame.
And of course phonecalls or texts are often not amiss. Don't hesitate to post your pictures and selfies online for pals either - there's a real chance they actually do wanna see your face and it's not like you've got a lot of people to discuss the quality of your meals with IRL right now.
If physical contact is something you're lacking, I suggest spending some time holding your animals when possible. Sleep with a pillow, stuffed animal, or folded up blanket if not. Use heavier blankets than usual and keep your house a bit colder to compensate. It can be comforting and make you feel warm and safe if you're alone. If you have dogs or cats don't forget to spend at least five minute a day focused on petting them as this often releases a lot of serotonin.