I'd be (genuinely) grateful if you could expand on why you think bank apps are less secure than internet banking. I have never worked in IT so I have no expertise, but months of research before coming to Thailand led me to believe apps were more secure (with the caveat that you have downloaded the real app in the first place). Especially if used with WiFi disabled, fingerprint (or similar) to access the app and a secondary measure, such as a password prompt, within the individual apps, when any money is being transferred out. You could, of course, add a VPN to add another level of security.
What am I missing that makes the above less than secure than internet banking? Please note: it's a genuine question and not a challenge to prove me wrong. I am always eager to learn from those with more experience/knowledge.
I will also add that I am using an HP Chromebook at the moment. The only reason I bought it was to come to Thailand on an extended holiday and wanted to travel light with no checked luggage. I was surprised at how well the combination of ChromeOS and Android worked for me. I do have multiple Google accounts in use and on one I do have the Android part disabled, which is easy to do. I generally like to have the Firefox app running as a back up browser, however.
You can use Linux too, and I tried, but I am out of my depth with Linux and was never comfortable using it so reverted to ChromeOS. Surfing/Video Calls/Email/Netflix etc all very easy. I had a bit of work to do when I first bought the Chromebook and used Office 365 without issue over a six month period. I do like most of the Google software (though only require basic spreadsheets in Sheets, so cannot answer one of the questioned posed in a previous post).
The only problem I encountered was on an older website I found when trying to practise Thai tones. It had some software you could download to practise your tones but the download files were only available for Windows or Mac.