You see at the very end, that your system is overcrowded by 193%!!
The goal is, to get this number down to 100%.
So don’t think of adjusting notes manually, because you are using Dorico here.
Go to Layout Options
1.) ->Note Spacing
(in your example there are hardly any spaces between the notes, so:)
Reduce to something incredible small. Default is 4, you will have to go down to 2 or even lower.
2.) Reduce the staff size (rastral). Choose a smaller staff.
3.) Reduce Page margins
4.) You might want to change the Notehead style to the smaller one (Dorico uses Large note heads as default). You can change this under Engraving Options.
5.) If that is not enough go to Library->Note head sets, change the size of the Default Note heads.
After tweaking all these settings, check that your percentage is down from 193% to maximum 100%.
And finally, if you upload those bars here, you can give us something to play with 