Brave browser installation

[proxydark]

Hey . I am trying to get Brave browser on my system. Trying to install from .deb package (official site)
Icon is shown on menu , can click but not opening at all

└──╼ $brave-browser
Reading profile /etc/firejail/brave-browser.profile
Reading profile /etc/firejail/brave.profile
Reading profile /etc/firejail/chromium-common.profile
Reading profile /etc/firejail/disable-common.inc
Reading profile /etc/firejail/disable-devel.inc
Reading profile /etc/firejail/disable-interpreters.inc
Reading profile /etc/firejail/disable-programs.inc
Reading profile /etc/firejail/whitelist-common.inc
Reading profile /etc/firejail/whitelist-var-common.inc
Parent pid 29566, child pid 29568
Warning: An abstract unix socket for session D-BUS might still be available. Use --net or remove unix from --protocol set.
Child process initialized in 2057.52 ms
/usr/bin/brave-browser: line 45: /dev/fd/62: No such file or directory
/usr/bin/brave-browser: line 46: /dev/fd/62: No such file or directory
[6:6:0807/110237.974700:FATAL:zygote_host_impl_linux.cc(116)] No usable sandbox! You probably need to enable user namespaces in your kernel. See https://brave-browser.readthedocs.io/en/latest/installing-brave.html#linux for more information.

Parent is shutting down, bye...

edit:
and the resolution I used is :
as SU
echo kernel.unprivileged_userns_clone=1 > /etc/sysctl.d/00-local-userns.conf
service procps restart

[proxydark]

Ok ,
Working brave.profile (not working when putted kernel.unprivileged_userns_clone=0 > /etc/sysctl.d/00-local-userns.conf

# This file is overwritten during software install.
# Persistent customizations should go in a .local file.
include /etc/firejail/brave.local

# Profile for Brave browser
noblacklist ~/.config/brave
noblacklist ~/.pki
include /etc/firejail/disable-common.inc
include /etc/firejail/disable-programs.inc
include /etc/firejail/disable-devel.inc

#caps.drop all
netfilter
#nonewprivs
#noroot
#protocol unix,inet,inet6,netlink
#seccomp

whitelist ${DOWNLOADS}

mkdir ~/.config/brave
whitelist ~/.config/brave
mkdir ~/.pki
whitelist ~/.pki

# lastpass, keepass
# for keepass we additionally need to whitelist our .kdbx password database
whitelist ~/.keepass
whitelist ~/.config/keepass
whitelist ~/.config/KeePass
whitelist ~/.lastpass
whitelist ~/.config/lastpass

include /etc/firejail/whitelist-common.inc

I putted it to etc/firejail/ and changed with original.

Also only way to work correct without changing profile, mixing with kernel file is to:
firejail brave-browser --no-sandbox

Any suggestions ?