You cannot fix this on the Russian version, and that is worth knowing before you spend more time trying.
Wix documents it as an open feature request, in their words: it is not possible to add, reposition or resize elements only in a specific language. Layout is shared across every language on the site, and only content is translated. There is no Russian-only spacing fix to find.
So the layout has to absorb your longest language, and the work happens on the English version.
Three things to check in the Inspector, in this order.
Text responsive behaviour. If a text element is set to Hug, its row count stays the same regardless of content. That is exactly what breaks when a translation runs longer. Set it to Wrap instead, which holds the font size and adds rows as needed, so longer Russian reflows instead of overflowing. This is the single most common cause of what you are describing.
Section height. A section on Fixed height will not grow when the text inside it grows. If your sections are fixed, that is where the overlap comes from.
Containers in between. The same applies at every level of the stack. One fixed-height container between the section and the text will clip everything, even when the section and the text are both set correctly.
Then build with slack. Wix’s own guidance is to make the text box big enough in the main language that translations fit without being cut off, to avoid overlapping text boxes with buttons or other elements, and to group elements rather than leaving them loose. On an English-first design that deliberate empty space feels wrong. It is not wasted, it is the room Russian needs.
One thing to test rather than take from me. The layout feature request says elements cannot be repositioned or resized per language, but Wix’s multilingual troubleshooting article separately suggests adjusting text size per language. Those two are in tension. If typography is adjustable per language while geometry is not, dropping the Russian font size one step may be open to you. Try it in the translation manager before planning around it.
The last resort, which nobody likes and Wix also suggests: shorten the Russian copy. A translation that fits the page is worth more than a literal one that breaks it.
