FTB here, too (I used to own a house with exH, but now am classed as FTB again). Yes, there are stressful aspects, but I made my life as easy as possible by doing as little shopping around as possible -
I went with my own bank's mortgage, which meant that I did not have to do much in terms of paperwork there as they already had all my details, including all transfers over the years, proof of income etc. They also arranged any surveys.
I went with the EA's recommended solicitors, which means that every time they don't pull their fingers out of their asses to actually work or don't answer my emails I can annoy the sales progressor, who is still keen on the commision they'll earn once the sale is completed. Part of the EA's advertising is about the solicitors losing business with them if they don't work well, so that puts extra pressure on them.
I insist on communication via email so I need to deal with as little annoying phone call chasing as possible.
And tbf I am enjoying the fact that lockdown meant pretty much all meetings are now virtual and I don't have to drive to places to speak to people in person. Meetings are scheduled and take place exactly when they should - no waiting around.
So while the uncertainty is still there, I am now in the final stages of the process with generally far less stress than the last time where all the different people we had to deal with made life more complicated than it needed to be.