How to create responsive pages, layouts in bubble.io

Thank you all for your contribution, I’m using the new responsive engine and after following and adapting the videos to the new engine i got the responsiveness but I have the problem where I’d like to have bigger pictures in desktop mode, like the ones on the bottom in this screenshot, but I get the upper ones if I make the columns responsive:

While The upper ones are good on mobile as I want 2 columns with pictures of 150 px max but they stay small on desktop while the bottom ones aren’t responsive and stay 4 columns instead of 2:

The main problem is that I can’t have fixed columns AND minimum column width togheter but it has to be variable columns, so they get the minimum width of the image inside.

I tried many things, the only thing that I have to try is changing the column/row/fixed container layout.

I’m using column for index and all the children are like the parent as I suppose that it’s the best option also since I’m aiming mostly at smartphones