Different social media works differently.I have some favourite social media and i am using this in lockdown and why i wll tell you-
Facebook-For communicate with my friends and family,i normally use facebook and most importantly facebook helps me a lot in my study.They have many different education page and many renowned person come to the live and accoreing to my subject i can join them very easily qnd in lock down people is using for educational puoposes.
Telegram and twitter-I normally use telegram for diffrent crypto news and vice versa.Twitter is the same for me.I use twitter for crypto news and rules etc.
Youtube-This media is the part and parcel in my life.I spend most of my time in youtube.From yiutube i can watxh any kind of video.Normally i use youtube for watching dramas,funny video etc.And sometimes i watch video from youtube for my study.It has all the details of any subject.And sometimes i watch crypto news and AMA (recorded) or live session.
Normally i use this social media a little in lockdown i am using this medias very much.
Youtube is a very good medium if you want to learn anything. You can find almost all the courses on youtube for free. When we were kids and in college we do not had such a facility. Now a days, students can easily learn at home. Anyone who is poor and cannot afford expensive study but had a willing to to learn can easily fulfil his learning desire through e-learning and youtube.
Also there is a concept of online learning in most of the school in my area. They are teching students online on skype through this pandemic.