No. It's supposed to be done in a fireteam. Solo is possible, but it's supposed to be harder. It's one of the activities that are made in a way to encourage multiplayer. If you can't do it, git gud. There's a reason I don't.
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It's never really about the difficulty. That's why people are mainly say scale bosses for Ghost and Vesper. You get the mechanics down very easily but the fights take like 4 or 5 damage rotations. Also the setups to get to damage take forever.
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They should prioritize boss encounters to go for 2 phases on meta setups, 3 on chaos loadouts assuming you have 3 people. This would translate to 6-9 phases (roughly) solo. Not too much fun, but it's still fair IMO.