thoughtsinuserspace

@joel_feila Super Grub2 Disk
https://www.supergrubdisk.org/super-grub2-disk/
Rescatux
https://www.supergrubdisk.org/rescatux/
build a rescue stick
https://pendrivelinux.com/yumi-multiboot-usb-creator/

@Luffy879 If someone comes from Windows and has little experience with Linux Mint LTS with XFCE4.
https://www.linuxmint.com/edition.php?id=313
With MX Linux (Debian based) you can create a live ISO with all packages and flat packs and then create a live USB stick with persistence (requires double memory on the Linux partition For the ISO)
https://mxlinux.org/
you can make installs from the usb after creating it.
Distrochooser
https://distrochooser.de/

@Landless2029 @jackpot
MX Linux- MX’s graphical tools provide an easy way to do a wide variety of tasks, while the Live USB and snapshot tools inherited from antiX add impressive portability and remastering capabilities.
https://mxlinux.org/
install on a usb drive and make sure that there is enough free space for creatng a live usb(double)with persistence.there are user curated lists of software on github-linux and lightweight.
https://github.com/sindresorhus/awesome

@Landless2029 @jackpot
forgot something.when you have created a live usb from mx linux with all your packages and
flatpaks you can install from usb .so you have always a backup with internet access that is fresh.

@Landless2029
mx linux is based on debian,so mint might be bettet for your needs(fresher packages).for mint there are explanations on reddit for the best way to do it.mx linux has a subreddit.it works for gaming but may be it is the best to do a domain query for reddit and protondb
what is best for your needs.