Stylish summer clothing

While searching I went down the rabbit hole of brands, styles and options and got lost.

I love the Italian style, but I’m a big dude, 192cm, 108kg and “bourgondic muscular” (loves food, loves the gym) so classic Italian sizes are a gamble.

To keep it a bit more simple, I d love some pointers to reasonably priced (meaning not fast fashion, but not designer either, looking for great quality at an honest price point) clothing that can be worn on a casual or slightly elevated night out, holiday near the sea or looking great while visiting the towns in Tuscany.

Preferred materials are stuff that is comfortable in the summer heat, perhaps a linen and cotton blend but open to any.

Price point: ideally max 300 euros for pants, shirt and maybe something over that to use in the evening (blazer or something else) per outfit, excluding shoes, socks and accessories. The shoes will be beige loafers from Velasca or Scarosso. I’m not exactly going for that yachting look, but don’t mind if it leans a bit that way.

Any brands that stand out as great quality, available to me in Europe? Not exclusively looking for Italian fashion, but as a way of illustrating what I would like, I used this example. Much appreciated. Hopefully I managed to describe what I’m looking for.