At that time, I already get off my work, so I think it was pretty okay. At that time, I already get off work, so I think it was pretty okay.

"my" is assumed. "My work" is also not wrong, but "get off work" is such a typical phrase that "get off my work" sounds funny.

See you this evening (also tomorrow on your side. One thing I need to apologize for is that 8:00 every night is when my regular lessons start, so we only have one hour's call, but it doesn't matter. If you want to settle thepick a better time down for athe long term, I can postpone my lessons to 8:30 pm from the eleventh of this month so that we can have a one and a half hour call. Please let me know what you think because I want to make everything very suitable for you. See you this evening (also tomorrow on your side. One thing I need to apologize for is that 8:00 every night is when my regular lessons start, so we only have one hour's call, but it doesn't matter. If you want to pick a better time for the long term, I can postpone my lessons to 8:30 pm from the eleventh of this month so that we can have a one and a half hour call. Please let me know what you think because I want to make everything very suitable for you.

As a west coast American, I haven't heard of "settle the time down" as a phrase, so I replaced it with a phrase that I am more familiar with. "a long term" -> "the long term", could also be "a longer term". "The long term" is a phrase that can be used to refer to the generic/unspecified future, while "a long term" means something like picking "a long term" from among a set of options.