Wifi keeps disconnecting randomly on Ubuntu 18.04 LTS

I am running Ubuntu 18.04 LTS on Lenovo Y50-70 in a dual boot setup allong with Windows 8.1. 3-4 times a day, the Wifi wold just disconnect suddenly and then automatically reconnect within a minute or two. Sometimes, it would fail to find any available connections and then I have to turn of the Wifi for 2-3 minutes and then it would reconnect. I have been facing these issues for atleast the past 4 months. Before that I was only using Windows and something like this would only happen about once or twice a month.

Here's the output of sudo lshw -class network:

  *-network                 
       description: Wireless interface
       product: QCA9565 / AR9565 Wireless Network Adapter
       vendor: Qualcomm Atheros
       physical id: 0
       bus info: pci@0000:08:00.0
       logical name: wlp8s0
       version: 01
       serial: 30:10:b3:a2:42:d7
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical wireless
       configuration: broadcast=yes driver=ath9k driverversion=4.15.0-147-generic firmware=N/A ip=192.168.0.100 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       resources: irq:17 memory:d1600000-d167ffff memory:d1680000-d168ffff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:09:00.0
       logical name: enp9s0
       version: 10
       serial: f0:76:1c:0b:b0:19
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-3_0.0.1 04/23/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:18 ioport:3000(size=256) memory:d1504000-d1504fff memory:d1500000-d1503fff

EDIT: Output of iwlist freq:

lo        no frequency information.

enp9s0    no frequency information.

wlp8s0    13 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Channel 12 : 2.467 GHz
          Channel 13 : 2.472 GHz
          Current Frequency:2.462 GHz (Channel 11)

Output of sudo iwlist scan:

lo        Interface doesn't support scanning.

enp9s0    Interface doesn't support scanning.

wlp8s0    Scan completed :
          Cell 01 - Address: 98:DA:C4:3B:F4:6E
                    Channel:11
                    Frequency:2.462 GHz (Channel 11)
                    Quality=36/70  Signal level=-74 dBm  
                    Encryption key:on
                    ESSID:"MY-WIFINAME"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000045b351da7e
                    Extra: Last beacon: 216ms ago
                    IE: Unknown: 000667617574616D
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 03010B
                    IE: Unknown: 2A0104
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1A6E1017FFFF000001000000000000000000000000000000000000
                    IE: Unknown: 3D160B070600000000000000000000000000000000000000
                    IE: IEEE 802.11i/WPA2 Version 1
                        Group Cipher : CCMP
                        Pairwise Ciphers (1) : CCMP
                        Authentication Suites (1) : PSK
                    IE: Unknown: 7F09000000000000000000
                    IE: Unknown: 0B05040000127A
                    IE: Unknown: DD180050F2020101000003A4000027A4000042435E0062322F00
                    IE: Unknown: 4A0E14000A002C01C800140005001900
                    IE: Unknown: DD8D0050F204104A0001101044000102103B0001031047001038833092309218839C7798DAC43BF4C41021000754502D4C696E6B10230009544C2D57523834304E10240003362E3010420003312E301054000800060050F20400011011001B576972656C657373204E20526F7574657220544C2D57523834304E10080002210C103C0001011049000600372A000120
                    IE: Unknown: DD07000C4300000000

Router page images:

Solution 1:

From the comments...

The existing router has a weak signal, and is positioned 2 feet off of the floor.

After changing the router's location, it's been working well.

Further problems may require replacing the old router.