Can someone logically explain why 在坐 is wrong and 坐着 is fine?
[在 + v] = in the act of carrying out the action.  e.g. 在穿衣服 (putting on clothes)
[v + 着] = the actions is in a continuous state. e.g. 穿着衣服 (wearing clothes/ the clothes is being worn currently)
More examples:
警察在打人 - the police is in the act of beating up someone
警察打着人 sounds strange because unlike 穿着衣服 (wearing clothes) which can be easily in a continuous state, (you can keep wearing the clothes while doing other activities.) 打着人(beating people) means the beating is in a continuous state. Generally, the verb in [v + 着] is a non-action verb, for example, 看，聽，想，吃，坐 ，站. While action verbs like 打，跑， 射 do not work with 着 easily

I need to know a logical reason why 在坐 is never used in chinese. If it were used, I would have translated it as taking a seat and 坐着 as being in a sitted state

在坐 sounds strange because 坐 is a static verb. 在 requires an active verb. 穿 can work with 在 and 着 because 穿 can be a static or active verb
Note: [V + 着 + V]  is a different structure, meaning the two actions occur simultaneously, e.g. 警察笑着打人 (the police is beating up someone while laughing); 跑着射擊 (shooting while running)