I think is really hard to be inspired when at home all the time - and hot stifling weather adds to the blahness. Even for those who normally are at home for work or family or health reasons, there are outings to get dressed up or be seen. So everyone deserves a pass on their style. It is just getting by...
I would wear whatever makes you happiest - might be athletic gear, it might be loose dresses, it might be sweat pants, or bright colours.
One thing that "might" help is extra skin care - home facials, masks, serums etc...I did a few of these in lockdown because I had the time.
I actually really like more formal business attire and really missed wearing that when I moved from a corporate job. I liked the armour, I liked the simplicity, and then having pure weekend clothes. 15 years on and I am well used to not wearing formal clothes and I foresee work attire getting even more relaxed.
I think in these grim times authentic might only be practical....but there will be stylish times ahead, and it could be fun to plan for them?
Big hug!