You can use Linux and TailOS
Tails OS isn't really convenient to use as a daily wallet, especially if OP needs to reboot to use it.I did installed Linux Mint METE Mate. But didn't found it comfortable at first. So I had revert back to Windows. Especially the UI, how it looked, appeared. The interface, font looked like breaking, not smooth, pixels.
FTFY 
The great thing about Linux is the many options you get: if you don't like one interface, try another. I'm not sure what you mean with "breaking font" though.
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I was thinking about duel booting but unfortunately I don't have enough space to run both OS. Only 240GB SSD.
Luckily, SSDs are very cheap nowadays 
Or even spare laptops, I was actually tempted recently when I saw an offer for 12 business laptops (i5, 8 GB, SSD, about $500 in total). That would mean no more virtualization, and just a dedicated laptop for every wallet I have 
But I didn't want the hassle of installing and updating that many devices.Quote
Yes, most probably I got infected using a crack version Driver updater. Since I had to fresh install everything.
Cracked drivers? The things Windows users do 
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It's not that bad either. Most of the time it would detect malwares.
This sounds like terrible "security".Quote
I have a bad habit of changing distros. Not just Windows or Linux, also Android. Since I am a custom ROM user. I frequently change my OS, to test out new features and bugs etc.
Why would you test all that on the same device? Get one system for serious tasks, and another one to mess around with.My guess: the malware is included in some of the software you install. Or you just download it again after a few days. Either way, stop doing that. If you have confirmed malware on your system, you can't be sure it hasn't collected more data. So change all your passwords and if you use a hot wallet, create a new seed phrase on a clean system and move your funds.
No worries, LoyceV. I had nothing of crypto on my system. No keys, no doc files, no nothing. Also all the funds have been moved already. Lesson learned.Quote
(I made a lot of quotes to multiple users. Is it ok though to quote this much?
Yes.I don't know if USB sticks are capable enough to run this OS for a longer period of time.
Some are, some aren't. I've had USB sticks die after a few writes, and I've had stick that last forever. To run your OS though, you'll need a fast and reliable one. Rule of thumb: don't go for the cheap sticks.Quote
Not saying it's bad, it's just not reliable.
It's a feature, not a bug.Quote
AFAIK, Windoes does have a similar feature as TailsOS.
No, it does not.There will always some things that you'll miss when using Linux.
Nope. Once you're used to it, there's no reason to go back. But it takes a while to get used to, just like it took you a while to get used to what you're currently used to.by that I mean a really new one from the store, not a used one.
I think I share my love for old laptops with philipma1957 by now. And with "old", I mean at least 8 GB RAM and SSD. Wipe the laptop and install your own software.I guess it depends on where you live though: here, corporate laptops are replaced every few years, which makes them cheap on the second hand market. You can find decent laptops cheaper than new hardware wallets.