Re: Can't Find any server....
For the time being, you can try a few of those:
# "favorite" server list / add to settings.cfg
add_favorite 176.31.117.94:8303 # Crylix zCatch Server - zCatch/TeeVi - ctf5 - 1 / 16 - 0.6.3
add_favorite 159.69.34.85:56276 # ! aledjones' Vanilla CTF [EU] [11] - CTF - ctf5 - 0 / 16 - 0.6.4
add_favorite 216.49.224.17:8303 # LinuxGSM - DM - ctf5 - 0 / 12 - 0.6.4
add_favorite 62.141.44.42:8330 # inQontroL Vanilla CTF5 Public Server - www.inQontrol.de - CTF - ctf5 - 0 / 16 - 0.6.3
add_favorite 193.169.53.222:8303 # Siberian Teeworlds server - CTF - ctf5 - 0 / 16 - 0.6.4
add_favorite 185.101.94.246:2103 # gCTF Community Server #3 - gCTF+ - ctf5 - 14 / 8 - 0.6.4
add_favorite 95.172.92.151:8400 # DDNet GER - zCatch Grenade Pro - zCatch/TeeVi - ctf5 - 0 / 16 - 0.6.5
add_favorite 193.30.123.173:8308 # ! [GER] SolidGaming.de #06 | TDM 2on2 - TDM - ctf5 - 0 / 4 - 0.6.4
add_favorite 128.193.254.148:8304 # BEES (ctf) - CTF - ctf5 - 0 / 8 - 0.6.4
add_favorite 185.101.94.246:2101 # gCTF Community Server #1 - gCTF+ - ctf5 - 15 / 6 - 0.6.4
add_favorite 95.172.92.151:8402 # DDNet GER - zCatch Grenade Pro - zCatch/TeeVi - ctf5 - 4 / 16 - 0.6.5
add_favorite 95.172.92.151:8401 # DDNet GER - zCatch Grenade Pro - zCatch/TeeVi - ctf5 - 3 / 16 - 0.6.5
add_favorite 94.16.119.249:2101 # оиух Allround Server #1 (Vanilla/gCTF/iCTF) - gCTF+ - ctf5 - 13 / 4 - 0.6.4
add_favorite 188.68.34.254:8303 # zCatch+ Grenade - zCatch+ - ctf5 - 0 / 16 - 0.6.5
add_favorite 185.101.94.246:2102 # gCTF Community Server #2 - gCTF+ - ctf5 - 14 / 2 - 0.6.4
add_favorite 129.232.182.213:8210 # DDNet South Africa - zCatch Grenade Pro - zCatch/TeeVi - ctf5 - 0 / 16 - 0.6.5
add_favorite 95.182.79.54:8308 # ! © ctf ru - CTF - ctf5 - 0 / 16 - 0.6.4
add_favorite 95.183.50.240:8064 # !Vanilla64!-CTF5 - CTF64 - ctf5 - 0 / 64 - 0.6.4
add_favorite 119.29.57.22:7400 # DDNet CHN - zCatch Grenade Pro - zCatch/TeeVi - ctf5 - 0 / 16 - 0.6.5
add_favorite 91.250.87.150:8307 # ===> Raidworld - zCatch (Mode and Map by Vote!) ->not full - zCatch - ctf5 - 0 / 16 - 0.6.3
add_favorite 119.29.57.22:8410 # [CHN][Tom] iCTF+ Server (瞬æ€å¤ºæ——大战) - iCTF+ - ctf5 - 0 / 16 - 0.6.3
add_favorite 95.90.189.20:7845 # ! ########## BAschtels Server - NO LAGS ########## - CTF - ctf5_baschtel - 0 / 16 - 0.6.4
add_favorite 173.248.146.35:4052 # ░▒▓ Wetfish CTF5 — CTF5 Only ▓▒░ - CTF - ctf5 - 0 / 16 - 0.6.2
add_favorite 119.29.57.22:7401 # DDNet CHN - zCatch Grenade Pro - zCatch/TeeVi - ctf5_e - 0 / 16 - 0.6.5
add_favorite 167.99.205.216:8303 # CWT TW Server - CTF - ctf5 - 0 / 16 - 0.6.4
add_favorite 149.202.127.134:8304 # ! ChillerDrag - CTF - ctf5 - 8 / 16 - 0.6.3
add_favorite 193.30.123.173:8309 # ! [GER] SolidGaming.de #07 | TDM 3on3 - TDM - ctf5 - 0 / 6 - 0.6.4
add_favorite 109.120.173.247:8304 # Turn Teeworlds CTF Server - CTF - ctf5 - 1 / 16 - 0.6.4
add_favorite 62.141.44.42:8329 # inQontroL Vanilla CTF5 Public Server - www.inQontrol.de - CTF - ctf5 - 0 / 16 - 0.6.3
add_favorite 31.186.250.212:7661 # Tizza&Friends | By Teecloud.de - DM - ctf5 - 0 / 5 - 0.6.3
add_favorite 185.11.136.180:8304 # Apollo CTF5 24/7 Server II, free4all - CTF - ctf5 - 0 / 16 - 0.6.5
add_favorite 74.91.114.132:8211 # DDNet USA - zCatch Grenade Pro - zCatch/TeeVi - ctf5_e - 0 / 16 - 0.6.5
add_favorite 173.248.146.35:5002 # ░▒▓ Wetfish General — Vote to change ANYTHING ▓▒░ - CTF - ctf5 - 0 / 16 - 0.6.2
add_favorite 5.9.82.75:9303 # ! lizard no lag - CTF - ctf5 - 0 / 16 - 0.6.4
Just an uncurated extract from //status.tw/
See also https://pastebin.com/vhkJpF0m