Network – RealTek RTL810xE PCIe for problems with Toshiba Satellite C55

Problems setting up the wireless network. The Ubuntu system settings state that no wireless adapter was found. The Ubuntu driver is downloaded from the RealTek website, but the terminal still gives me an error message and I'm pretty sure I'm not using the correct commands.

Below is the inxi -Fxz info:

System:    Host: Freedoms Kernel: 5.0.0-23-generic x86_64 bits: 64 gcc: 7.4.0
           Desktop: Gnome 3.28.4 (Gtk 3.22.30-1ubuntu4)
           Distro: Ubuntu 18.04.3 LTS
Machine:   Device: laptop System: TOSHIBA product: Satellite C55-C v: PSCP6U-02J01E serial: N/A
           Mobo: FF50 model: 06F5 v: Type2 - Board Version serial: N/A
           UEFI: INSYDE v: 5.20 date: 09/15/2015
Battery    BAT1: charge: 24.6 Wh 81.9% condition: 30.0/38.5 Wh (78%)
           model: Panasonic PA5185U-1BRS status: Discharging
CPU:       Quad core Intel Pentium N3700 (-MCP-) 
           arch: Airmont rev.3 cache: 1024 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 12800
           clock speeds: max: 2400 MHz 1: 589 MHz 2: 650 MHz 3: 1012 MHz
           4: 1160 MHz
Graphics:  Card: Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller
           bus-ID: 00:02.0
           Display Server: x11 (X.Org 1.20.4 ) driver: i915
           Resolution: 1366x768@59.99hz
           OpenGL: renderer: Mesa DRI Intel HD Graphics 405 (Braswell)
           version: 4.5 Mesa 19.0.2 Direct Render: Yes
Audio:     Card Intel Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series High Def. Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k5.0.0-23-generic
Network:   Card-1: Broadcom and subsidiaries BCM43142 802.11b/g/n
           bus-ID: 01:00.0
           IF: N/A state: N/A mac: N/A
           Card-2: Realtek RTL810xE PCIE Fast Ethernet controller
           driver: r8169 port: 1000 bus-ID: 02:00.0
           IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: 
Drives:    HDD Total Size: 1004.3GB (0.9% used)
           ID-1: /dev/sda model: HGST_HTS541010A9 size: 1000.2GB
           ID-2: /dev/mmcblk0 model: N/A size: 15.9GB
           ID-3: USB /dev/sdb model: DISK size: 4.1GB
Partition: ID-1: / size: 398G used: 6.7G (2%) fs: ext4 dev: /dev/sda5
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 46.0C mobo: N/A
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 250 Uptime: 12 min Memory: 1546.5/3854.5MB
           Init: systemd runlevel: 5 Gcc sys: 7.4.0
           Client: Shell (bash 4.4.201) inxi: 2.3.56 

Any help would be appreciated!
Thanks in advance!