Similar situation here as OP.
If they can not provide interactive classrooms, why is it not possible to come up with another way of connecting with the children? And also a way for supporting the children to connect with each other? There are ample opportunities for all of that.
To date, my child's form tutor has not made any contact at all - not by email, not by text message, not by phone. Nobody else stepped in either. The very first contact made by the school was a phone call by one subject teacher two months(!) into the lockdown.
Word worksheets are the default. No sample solutions to exercises for self-checking, some worksheets are not even solvable due to missing information. The best thing my child ever go was exactly one powerpoint presentation with the teacher's voice explaining things, asking them to do little tasks and then discussion solutions. It was a very simple thing, but they could actually do on their own and it worked brilliantly.
Teachers can easily learn how to powerpoint with sound recording. If it's not obvious from the drop down menu, watch a 2 min YouTube video about how this works. Or do podcasts. No special training day is needed for that. No "teaching space" is needed for any of this - this can be done in a bedroom in front of a wall, shelf, wardrobe (or click on virtual background such as on Mars or an office if you do not want to share any of your room's walls).
Tweens or teens naturally do not want to be taught by their parents. In most cases, there is no alternative to teaching coming from schools.
Our school has made sure that parents to do not complain by sending emails upfront claiming that what they are doing excellent and explaining that nothing else is possible.
I initially trusted the school's explanations about not conducting online live lessons and not providing any videos by teachers. Then I found out, by chance, that their acting vice principle asked Y7 children to send in videos of themselves (to use for transition day).