In Microsoft Excel, when one opens a spreadsheet, it opens to where you were when you saved it.
Google Sheets lacked this functionality, but you could work around it with a script that would open the sheets to the bottom of each page.
Proton Sheets has neither option...and it's a bit of a pain, as I've an extensive (and complex) bank ledger going back 20 years with a dozen tabs and over ten thousand lines on the main page.
So I ask - beg, plead, grovel on my knees on broken glass - please, for the love of all that is shiny, add the ability to open a Proton Sheet where you left off, rather than defaulting to the top of the sheet.