I do not see anything " modern coastal " in that room. Not with prairie grilles on the windows and grey couch and rug. What else is going in the room? What type window treatments? I would look for something simple like this from Ashley.

I like the Noguchi coffee tble with sectionals it works well since it has a nice soft triangular shape .

This will probably not endear me to you but will suggest that you sell the sectional and get a sofa and chairs for your room. The sectional is blocking the windows. Sectionals are almost impossible to accommodate in a layout. Also, your room is pretty much devoid of color. Would suggest you switch out the rug with one that has color and pattern. After that would suggest you look for a coffee table as well as end tables. It should be fairly easy to find pieces that complement the tv console.

I think a room feels more interesting and dynamic when tables don’t match (but are close enough style wise to be complementary). Achieving modern coastal with your rug may not be possible and if that’s where you want to head, I’d sell and replace. First though, think big picture and look on line for inspiration. Note rooms with darker rugs similar to yours/table used or with a light, simple rug/table used. Define your favorite look before moving forward, as decisions on accessories and window treatment would be different as well.

This^^*^

Maybe a metal sculptural coffee table to bring in a bit of contrast to all the gray? Something in a bronze would be nice:

Modrest Grayson Glam Brushed Bronze Metallic Coffee Table · More Info

Trifoil Coffee Table, With Glass, Bronze With Glass · More Info

River Stone Cocktail Table Bronze, Large · More Info

The two pieces don't have to match. They have to work nicely together

Maybe you want both an ottoman and table??????

Beverly's ideas are great!

Sometimes you can make yourself go blank in your search. Don't think of it as a crisis. It should be more fun and not stressful at all. You have many more items that need to come into this space to try to achieve your coastal vibe - don't hang it all on a coffee table.

Good luck! Try to have fun!