Take it easy, with every step it gets better.

https://www.openstreetmap.org/way/1195222384
Please delete area=yes and restore shop=car_repair (but not building=car_repair); editor templates may make it difficult (iD is not exactly a good editor), but you can use raw tags, don’t worry if they don’t match the templates. You can also restore the address tags.

https://www.openstreetmap.org/way/1195222384
https://www.openstreetmap.org/node/9996144291
https://www.openstreetmap.org/node/3141050804
And one more thing regarding geometry. Please try to include the above nodes in the above way.

https://www.openstreetmap.org/node/8260209961
https://www.openstreetmap.org/way/1079123342
Please either delete the address node or delete address tags from the way.