Sharepoint 365 and Visio diagrams

Hello Community,

I would like to store process descriptions in a Sharepoint 365 site. For this purpose I have built diagrams in Visio. Now I have 2 challenges for which I can not find solutions:

1) how can I ensure in Sharepoint that the link in the diagrams are opened in the same window? Currently, new tabs are always opened.
2) The charts always show scrollbars, borders around the overall chart, borders around the widget and zooms which are rather annoying at the point. How could you make sure that with the File content widget these things are not displayed or is there another way that you don't get this displayed?

I've been looking for a solution to this problem for quite a long time now, but never got a satisfying result so far

Thanks for the help

Greetings
Carlos