Self-Improvement in terms of relationships

I'm always trying to improve myself when it comes to interacting with other people, but I have a lot to work on.

What are some ways to recognize personal flaws that go over your head? A lot of people I interact off-site with are non-confrontational or don't want to be rude by saying something to me, I'm sure.

I know that I myself have problems with the rhetoric I use at times, but I find it hard to fix if something is not brought to my attention. I'm on the autism spectrum so it's likely that has a minor effect.

Sometimes I have trouble gleaning from people's text in online settings what their implied feelings are and take their words for face value (reading between the lines I think that is?). That can make it hard to evaluate situations. When they use explicit language to explain their feelings I understand what they mean, though (such as on this forum).

I watch a lot of videos on youtube considering emotional intelligence that are a roundabout way of making improvements at least (I would comment specifics but I don't want to come off as promoting channels)!