I have to agree with phil57.
I built my tree on my family history software which sits on my pc, and it was very happy there, especially after I had a poor experience about 15 years ago when I shared my tree with one person and asked them not to share

. That tree is now littered with errors all over ancestry.
Earlier this year I finally did an Ancestry DNA test.
Results arrives and the closer matches were pretty easy to work out but there are the frustrations of private trees.., extremely small trees and no trees at all. It then became more time consuming to work out the matches, so, like phil57, I uploaded a barebones tree, kept it private but searchable, which is necessary to get the thru-lines and hints.
More matches to work through, some frustrations with very no matches at all and my original shared tree keeps coming up

…
I email one person linked to this tree and he very politely replied today and said yes, you know the Morgan line is a very big tree lol! If only he knew! Anyway, he didn’t answer my question (he has one of those clown1234 user names and kept his parents and grand parents private). No worries, I know roughly where he sits in the tree.
So yes, if you do decide on doing a dna test, I suggest you do as phil57 has done.
I’m still learning with this dna lark and must thank several members on the boards who have shared their advice.
My aim was not to find a missing grandparent but to try and verify my years of research. It’s working out quite well and I have also found the parentage of 2 NPE matches so far.