It was two years of life being suspended and disrupted... except life doesn't pause. Children keep developing, old people keep aging and dying and those natural transitions were disturbed and fractured.
Many older people struggled to revert back to previous routines and aged more rapidly than the two years of real time. People in carehomes often faced 2+ years of restrictions severely affecting quality of life, often until the end of their life.
Children's education, experience and socialisation was disrupted. People working with children and young people can still see cohort-wide traits from the way different age groups were affected. It opened a can of worms on screen time and breaking social contacts and connections. Health/ social care delays exacerbated problems by reducing early interventions, and it became harder to distinguish underlying problems from "Covid delays"
Because everyone was simultaneously disrupted, support networks broke down and people lost capacity to support each other because so many people were having their own struggles at the same time. That took a long time for people to get over.
For many, many people, those two years shifted the axis of their lives on different paths than the direction they were going in. Lives change, but rarely simultaneously like that.
A lot of people took a prolonged time to feel stable again. Many were changed completely. A lot of relationships and social connections fractured and drifted.
In society, some changes were abruptly fast tracked from the natural pace of change e.g. technology use and automation. Just as we were emerging from the legal restrictions in Feb 2022, the Ukraine invasion occured with its political and economical consequences. The financial consequences of Brexit were tangled up in the same era too. The restrictions of Covid did hit the economy dear in their own right though and we're still paying the price through other major events that have occurred since.
Society in 2026 was never going to be the same as 2019, but the impacts of 2020-22 were the greatest, most widespread social and economic disruption in the post-war era.