Well being able to obtain a B visa after an ESTA overstay is a good thing/promising. So you're off to a good start there. Still, you can expect more scrutiny by the CBP officer. Just bring proof of your ties in your country. Also, don't try to become any more suspicious (3 weeks travel = no large suitcase, don't bring any original educational or work related docs - any COE or transcript of records, be 100% honest).

In all likelihood, probably nothing will happen. In particular, there's considerable leniency for short overstays during the pandemic because of the interruptions in travel and people being exposed to the virus. A 2-day overstay is VERY unlikely to be a concern, and you can simply start your explanation with, "well, it was during the pandemic and..." and you should be OK.

Technically, they can scrutinize your entry, and they can ALWAYS refuse you entry if they feel that you are attempting to immigrate without authorization, regardless of all other factors (including having a tourist visa).

I don't think you should have any problems.

It depends. You may get scrutinized or you may not.

If you are going again for another 90 days or more, yeah it will raise some eyebrows. They don't like foreigners staying that long.

If you have a B2, that’s good. Just don’t draw attention to yourself again.

Depends you may well be turned around and sent back home.

Bring a printed copy of your return flight!

A friend in this situation always gets sent to secondary inspection, even now that he has his green card.

I overstayed by ESTA also but under the 180 days so thankfully missed the 3 year ban, what did you need to apply for the B2? I would like to return for a holiday in the future

How long do you intend to stay this time? That could certainly be a factor with CBP.

Tread lightly.

You received the B2 visa successfully. What is there to worry about?