Excellent suggestions thus far! My two cents: I would play around with proportions (e.g., cropped and/or voluminous pants, longer tops underneath, skirts of varying lengths and shapes), prints (e.g., striped top underneath, graphic t-shirt, plaid or patterned pants), unusual color combos, scarves and other accessories, and interesting footwear (e.g., rugged boots or big sneakers like you've got).

(I was all set to add a bunch of inspiration pics but for some reason I'm not able to...will try later :).

ETA, pics added!

I'll add one more to Jonesy's great collection.

This is from a retail site - the pants are linen, not denim.

Here are a few off my Pintrest boards.

One thing I notice is in all the inspiration pics the blazers are unbuttoned. In your pics of yours they are buttoned. Do you button them for formal wear?
I am also not a fan of jeans ( own one pair now, from 2017) and don’t tuck tops. I like ponte pants a lot which can also be casual as well as dressy. I wore a tweed jacket with some yesterday and with an untucked top and dark sneakers. Was happy with my look.

Hi Katerina; I think of your look as more polished and refined than anyone else on YLF. Thus, I am thinking that some of the great suggestions will make you feel very very uncomfortable and not at all like yourself.

Would you consider white jeans in warmer weather and leather pants in winter? How about cotton or linen scarves instead of silk? Sweaters including sweater tanks and turtlenecks underneath. And of course polo shirts per Angie.

Just be you! We can’t have you going American on us.

As has been suggested a graphic tee cinder a jacket or blazer or even a moto jacket. Sneakers as footwear..

As another blazer wearer I agree with all the suggestions….this summer I have been outside a lot and have paired my blazers with a baseball cap, linen tank top, and Ecco Soft Seven sneakers…..which makes my look more casual but maybe keeps it more refined than if I used large sneaks. I admit that recently on a hot rainy day, I wore my waterproof Birkies with a linen blazer and cutoff Bermuda length Jean shorts….most of my appointments were remote…..

eta: I just noticed Jenava’s picture is taken with Birkies!

Reinforcing my favorites of DonnaF's suggestions, the white jeans and leather pants and such a good point that cotton or linen scarves would casual-ize blazers too.