While I see why, in a confessional, especially before Mass and when there are people queuing, it is courteous to keep it short, I only go to make a confession this way in an emergency. Maybe a handful of times in my whole life.
When I go to confession, I do it face to face, by appointment with the priest, usually in the priest’s sitting room (or kitchen or some other random place

). Normally about every 3-4 weeks, but there have been periods in my life when I went more frequently, on occassions weekly, always face to face. And yes, there has been a period in my life when I did not go for a longer period.

(I must add that I live in a big town in England where there are many churches and while most churches only offer confession “slots” only once a week for about an hour or even half an hour, priests are available and around, if you want to make an appointment.)
It takes about an hour. Not because I “expand” on the sins, or tell the whole story, or that I tell so many venial ones that it lasts long. Part of the reason it takes about an hour is because I usually also ask for spiritual direction. I might confess something relating to prayer, for example, and we would talk about my prayer life. Sometimes I would make a relatively short and concise confession - and then the priest would give me direction on various things, which might make me explain something else, and listen to his advice, while we would still be “in confession”, technically, i.e. before absolution. But it also lasts longer because it is - I don’t really know what word to use, the best one that expresses what I mean is “leisurely” but without the connotations of superficiality. This means that when I go to confession the priest lets me “breathe”; sometimes we are both silent for a while. Sometimes he would say something and we would both think about it. Sometimes I would ask a question and he would think before answering; or he would ask something and I would have to think before answering. The priest I currently go to has a beautiful icon of Christ in one corner of his sitting room. A few times it has happened that I had to look at it for a few seconds to be able to go on in my confession. At the end he would allow me sufficient time to make an act of contrition, not just saying the words but praying and thinking them over while I say them; and then he would give me absolution and we would sit there in silence for a few minutes so I can absorb what just has happened. This makes the whole encounter very holy and significant, a real important event in my life (as it is).
I hope this will not scandalise you all, but we usually have coffee during this time, too. But I can say very honestly that this does not make the occasion profane or less holy.
I will still go to a church and confess anonymously to any priest, if I have to. If I realise I’ve committed a mortal sin. But I would never adopt this as my usual way of accessing the sacrament of penance.