I'm not an introvert but I've always appreciated being alone, and I've done fine with the lockdown, and I'm fine like not going out and seeing people, etc. My wife is a major extrovert and really, really struggled.
I often think, like, if I wasn't married and didn't have a kid, this would have been one of the easiest 9 months. The hardest things for me was balancing work and a toddler which was really hard, we did fine so far, but like almost all of my anxiety was over worrying if I'd get sick and who would take care of my 2 year old if I'm having difficulty breathing/living, and I can't send her to my parents because she'd spread it to them and they'd die, etc. That was the strong anxiety I had in the first 3-4 months. It's subsided since, TBH, we've been living with the virus in our community and treatment seems better now than it was back in March/april/May when things were really scary around us.
I feel guilty about that thought that I have, like, it's not right for me ot think "goddam it'd be so easy if I wasn't married and with children..." I love my wife, love my child more than anything in the entire world x10,000,000, but it's a thought I often have, like "ffs, WFH for 9 months would have been my fucking DREAM."
Where I'd struggle probably is if I were single. I do think I'd be lonely in my love life and feel isolated by like not be able to meet someone, so I'm thankful for my situation. MAke no doubt I wouldn't want to change anything in my life.