You asked some good questions though many don't have an exact answer. You can apply for green card as soon as you are married. It's impossible to...

You need to meet with an experienced immigration attorney in middle Tennessee to discuss your options.

Applicants often get confused and only focus on arrests when the question also asks about citations (which are tickets). Since you corrected...

It's possible it will be rejected but depending on questions, it may not be rejected. If filing accepted, you can correct answers at interview.

You don't need a letter from USCIS notifying of need to renew. Just file I-821D and I-765 w/ filing fee and copy of EAD. You may want to retain...

Unfortunately, sponsoring a sibling takes many years. As previously suggested, if sister has marketable skills, she may be able to be sponsored for...

It is unlikely this will work because, as previously stated, you must still in valid non-immigrant visa status until the very day you are...

Will it be possible to stay for 14 days in another country and then travel to US?

Yes, you may travel to another country, stay there for 14 days and then travel to US with a negative COVID-19 test.

Can I start work based on H1B receipt after 6 years? I recently got my approved I140

No, you may not start back work based on receipt of application. You must wait for approval.

What is the best thing to do? Any suggestions?

If you are still able to file a police report do so and then seek the police to provide a U visa certification. If, and that's a big if, you can...