proxychains is not working

Hello.

I'm facing an issue and pulling my hair out, can't fix it.

I checked proxies many times through proxy-checker script, it keeps saying that everything is fine, proxies are good and workable. But in terminal I keep getting:

$ proxychains firefox duckduckgo.com
[proxychains] config file found: /etc/proxychains4.conf
[proxychains] preloading /usr/lib/x86_64-linux-gnu/libproxychains.so.4
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] Dynamic chain ... 85.195.120.158:1080 ... 120.220.220.95:8085 ... 167.114.96.27:9300 [proxychains] DLL init: proxychains-ng 4.16
<--socket error or timeout!
[proxychains] Dynamic chain ... 85.195.120.158:1080 ... 120.220.220.95:8085 [proxychains] DLL init: proxychains-ng 4.16
... 54.37.160.93:1080 <--socket error or timeout!
[proxychains] Dynamic chain ... 85.195.120.158:1080 ... 120.220.220.95:8085 ... 8.210.67.251:80 [proxychains] DLL init: proxychains-ng 4.16
<--socket error or timeout!
[proxychains] Dynamic chain ... 85.195.120.158:1080 ... 120.220.220.95:8085 ... 88.198.50.103:3128 <--socket error or timeout!

I tried to use strict, dynamic and random chain method, but it didn't help.
Also I tried to use simply default tor settings, the same problem (tor service is on):
$ proxychains4 firefox duckduckgo.com
[proxychains] config file found: /etc/proxychains4.conf
[proxychains] preloading /usr/lib/x86_64-linux-gnu/libproxychains.so.4
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] Dynamic chain ... 127.0.0.1:9050 ... duckduckgo.com:80 [proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
[proxychains] DLL init: proxychains-ng 4.16
<--socket error or timeout!
[proxychains] Dynamic chain ... 127.0.0.1:9050 ... firefox.settings.services.mozilla.com:443 <--socket error or timeout!
[proxychains] Dynamic chain ... 127.0.0.1:9050 ... firefox.settings.services.mozilla.com:443 <--socket error or timeout!
[proxychains] Dynamic chain ... 127.0.0.1:9050 ... shavar.services.mozilla.com:443 <--socket error or timeout!

Sometimes I had got message "denied" instead of "timeout".

run first tor service
sudo systemctl start tor
then
proxychains firefox duckduckgo.com
I just edit proxychain conf with uncommented dynamic_chain and add to proxy list at the bottom of this file configuration:
socks5 127.0.0.1 9050

Done.

Have you done the changes that @afiadi recommended? That is literally all you have to do, but I would add that (in Kali), it is technically proxychains4, so /etc/proxychains4/proxychains4.conf needs to be modified as he described. I will add a screenshot of my PC4 conf file. Note the 3 changes, commenting out any chain other than dynamic, un-commenting dynamic_chain, and adding socks5 to the end of the file. Attachment 4846 Attachment 4847