Why are you on selegiline?
It takes 4 weeks to work and dose may need adjustment. Side effects also tend to decrease with time. You seem to have run through a good assortment of SSRIs, so I am curious why you want to change. It does interact with SSRIs, so need careful transition if you decide to do that. I just wouldn't give up on it yet.
I was put on 5mg selegeline as a replacement for the 6mg EMSAM patch as I was told it is very similar, however, so far (one week) it has made me feel anxious and hyper at times as well as nauseated and headachy . If side effects lessen over time than perhaps I will continue on the selegeline.
With the failure of SSRIs it is worth a try. 2-4 weeks is typical for response, side effects should get gradually better.
EMSAM is selegiiline in a transdermal patch, so if don't feel better in a couple weeks, check with MD. The side effects now may be because dose was administered more slowly with patch. Did it help other than skin reaction?
I did feel that it helped, except that the patch and the oral both cause insomnia.