My friend’s child attended one of them.
They decided to leave.
It was interesting to child unless a tutor quit from the centre. Also, the centre very often changed the time. Moreover, it very busy.
About your temper. Usually, children have a tutor or go to a learning centre once a week. In between, they must to do a lot of home practice ( including new unknown material). That means, you will be involved into the process anyway.
Although, you are not obliged to explain and leave unclear question to the tutor, but it may significantly reduce knowledge.
Our DC attend a small centre where pupils work in a group of four. Sometimes, children distract each other during lessons, but in whole it is ok; tutor know how organize them back.
One to one is the best way for children who struggle in something particular, or not too much time left before exam.
Maybe this is only my opinion nut try to look at the learning like on join exercises.🤗