How to insert a multi-column block with container width in a full-width-section?

Hi there,

I've tried the "sections" Option, but if I insert a multi-colum block, its also automatically a full width block.
Sure I can do something with margin / padding, or do a 3 column block 15/70/15 and in the center block an additional 3-column block 33/33/33– but that's a bad workaround and not exact matching the layout.

Is there any option to place ANY block in a section within the standard container width? (1160 px at my size)?
Or is there an alternative to the section with GP Premium?

I want a fast performance, so I don't want to use additional block plugins like Kadence, Getwid, Kioken etc.
At the moment, Kadence is (still) used.

Website:
https://michaelmittau.com

On the front page, I want the 3 columns below "Featured Works" fit in the regular container 1160px.