I think therapy could help and I heard of couples for whom it helped either to improve or end their marriage. Problems arise in long term marriage that might need outside help.

But... I don’t want to be negative but if a couple needs marriage therapy after just one year of marriage, there isn’t much hope. It is supposed to be a happy bliss. If it’s a struggle from the get go, I think the issue might be wrong match from the start, not something that might go wrong over time (kids or money or stress etc)