Is there any strong antivirus I can use to safeguard my PC from malware? I have few coins that runs wallet only on PC but it's very easy for PC to get compromised that's why I'm looking for a safer tool that can fight Trojans and malwares.
Many different options have already been suggested above, but I did not notice the recommendations for using Live USB with Linux.
https://en.wikipedia.org/wiki/Tails_(operating_system) comes with Electrum wallet (version may not be the latest).
How it works? - Insert a flash drive (with a pre-installed distribution kit) into any PC and boot from it. Use as any full-fledged Linux OS with some reservations. If desired, you can make a Live USB with Windows.
Nuances:- after turning off the Live USB, all data from the temporary memory will be deleted (but you can save them to another storage medium beforehand) and from the permanent memory of the Live USB too (this doesn't apply to other storage media connected to the PC).
- the need to re-install the applications you need each time and enter data to access them, if required.
- for example, in the case of Electrum (already preinstalled), you will have to enter the seed-phrase each time anew.
- I ask you to add that info that can be useful for the topic starter. I only mentioned the first thing that came to my mind.
How to use? - You can easily find detailed guides on the internet. I just pointed out a possible solution to your Live USB problem.
There is also an option using VirtualBox: install on Windows VirtualBox with any Ubuntu distribution you like (or Windows). It turns out 1st OS inside the 2nd OS, which are not interconnected. That is, viruses from the 2nd OS cannot get into the 1st OS and are isolated (if any) without the possibility of causing harm. OS in VirtualBox with permanent memory. That is, everything is stored in long-term memory. I only briefly and superficially indicated. I think you can figure out where to look for details.

Lots of options - take your pick.