How to boot into recovery mode?

[Android Central Question]

I'm trying to root using tarp and magisk, but don't know what recovery mode is referring to here. Is it safe mode? On my phone, safe mode is done at startup by using certain buttons, not executed from recovery options window. If it isn't safe mode , then what option would I use from recovery screen to flash magisk zip through twrp? There is reboot system now (doubt its that), install update with adb, wipe data factory reset, wipe cache partition..... none of these seem like right option, but I really don't know. Any help, suggestions is greatly appreciated. I'm running Android 7.1, on Zte Blade phone. I'm trying to recover deleted data/sms messages, main purpose of root, so trying not to delete anything in process...but I know sometimes things go wrong. Thank you in advance.

 

[Jpint0811]

I'm trying to root using tarp and magisk, but don't know what recovery mode is referring to here. Is it safe mode? On my phone, safe mode is done at startup by using certain buttons, not executed from recovery options window. If it isn't safe mode , then what option would I use from recovery screen to flash magisk zip through twrp? There is reboot system now (doubt its that), install update with adb, wipe data factory reset, wipe cache partition..... none of these seem like right option, but I really don't know. Any help, suggestions is greatly appreciated. I'm running Android 7.1, on Zte Blade phone. I'm trying to recover deleted data/sms messages, main purpose of root, so trying not to delete anything in process...but I know sometimes things go wrong. Thank you in advance.

I posted this question but couldn't find option to edit. I didn't register til after I posted though, might be why. So, I wasn't thinking that no apps can be accessed in safe mode, obviously that's not it. I haven't figured it out yet, still lost.