I hope this is my last post about this problem. I followed your instructions.
Firstly, I looked on Internet to find out more about AVG browser. I´m not sure but it seems to me that Chrome and AVG browser share majority of the files and I think that´s why i couldn´t get rid of it. Ok, so what i did was I reset the settings in AVG browser (didn´t help), so i uninstalled it.
Secondly, I tried to run the Chrome cleanup tool, which didn´t find anything suspicious. Then I reset the settings in Chrome, as you suggested.
In the end, I uninstalled it to check if it would help. I can´t really tell if it was some kind of a hidden extention because when I ran the Malwarebytes scan again it didin´t find anything. I checked the quarantine, there was still a Trojan.LNKHijacker.ClnShrt, which was found earlier but couldn´t be delleted from previous scans. Quarantine was totally cleaned up. I made last 2 scans (one default, one with all storage devices) and it didn´t find anything again. I´m also attaching the reports.
I hope I did everything right and it won´t somehow come back again. Can it be installed back (Trojan...) after installing the Chrome browser?
What do you think? What´s your opinion on this?
Is it completely removed from the system? Should I run some scans with other specific antimalware programs?
Anyway, I´d like to thank you Maurice for helping me to solve this problem. I wish you good luck with solving other problems on this forum.
Thanks for answering me,
PS. It looks like the laptop is running faster, but again, I can´t really tell, maybe it´s just a feeling.