Ubuntu 20.04.3 LTS keeps freezing and crashing

Usually after few hours of computer use my laptop starts to freeze – mouse is responding very very slowly or not responding at all and I'm unable to click anything, impossible to open close software including terminal. After some 10-15 minutes of waiting everything goes back to normal. And if I don't restart the computer then next time my laptop won't recover, it will become unresponsive completely. Also sometimes audio starts to sound robotic with an echo. I think both problems are connected and related to laptop overload or something, but my hardware is better than my last laptop and I never had these problems. Could anyone help me resolve this issue?

H/W path Device Class Description

• system 20VG (LENOVO_MT_20VG_BU_idea_
• /0 bus LNVNB161216
• /0/0 memory 128KiB BIOS
• 0/4 processor AMD Ryzen 5 4600U with Radeon
• /0/4/5 memory 384KiB L1 cache
• /0/4/6 memory 3MiB L2 cache
• /0/4/7 memory 8MiB L3 cache
• /0/22 memory 8GiB System Memory
• /0/22/0 memory 4GiB SODIMM DDR4 Synchronous
• /0/22/1 memory 4GiB SODIMM DDR4 Synchronous
• /0/100 bridge Renoir Root Complex
• /0/100/0.2 generic Renoir IOMMU
• /0/100/1.3 bridge Renoir PCIe GPP Bridge
• /0/100/1.3/0 generic SD/MMC Card Reader Controller
• /0/100/2.1 bridge Renoir PCIe GPP Bridge
• /0/100/2.1/0 storage Samsung Electronics Co Ltd
• /0/100/2.1/0/0 /dev/nvme0 storage SAMSUNG MZALQ256HAJD-000L2
• /0/100/2.1/0/0/1 /dev/nvme0n1 disk 256GB NVMe namespace
• /0/100/2.1/0/0/1/1 volume 259MiB Windows FAT volume
• /0/100/2.1/0/0/1/2 /dev/nvme0n1p2 volume 15MiB reserved partition
• /0/100/2.1/0/0/1/3 /dev/nvme0n1p3 volume 132GiB Windows NTFS volume
• /0/100/2.1/0/0/1/4 /dev/nvme0n1p4 volume 999MiB Windows NTFS volume
• /0/100/2.1/0/0/1/5 /dev/nvme0n1p5 volume 104GiB EXT4 volume
• /0/100/2.3 bridge Renoir PCIe GPP Bridge
• /0/100/2.3/0 eno1 network RTL8111/8168/8411 PCI Express
• /0/100/2.4 bridge Renoir PCIe GPP Bridge
• /0/100/2.4/0 wlp4s0 network Wi-Fi 6 AX200
• /0/100/8.1 bridge Renoir Internal PCIe GPP Brid
• /0/100/8.1/0 /dev/fb0 display Renoir
• /0/100/8.1/0.1 multimedia Advanced Micro Devices, Inc.
• /0/100/8.1/0.2 generic Family 17h (Models 10h-1fh) P
• /0/100/8.1/0.3 bus Renoir USB 3.1
• /0/100/8.1/0.3/0 usb1 bus xHCI Host Controller
• /0/100/8.1/0.3/0/3 multimedia Integrated Camera
• /0/100/8.1/0.3/1 usb2 bus xHCI Host Controller
• /0/100/8.1/0.4 bus Renoir USB 3.1
• /0/100/8.1/0.4/0 usb3 bus xHCI Host Controller
• /0/100/8.1/0.4/0/3 generic ELAN:Fingerprint
• /0/100/8.1/0.4/0/4 communication Bluetooth wireless interface
• /0/100/8.1/0.4/1 usb4 bus xHCI Host Controller
• /0/100/8.1/0.5 multimedia Raven/Raven2/FireFlight/Renoi
• /0/100/8.1/0.6 multimedia Family 17h (Models 10h-1fh) H
• /0/100/8.2 bridge Renoir Internal PCIe GPP Brid
• /0/100/8.2/0 storage FCH SATA Controller [AHCI mod
• /0/100/8.2/0.1 storage FCH SATA Controller [AHCI mod
• /0/100/14 bus FCH SMBus Controller
• /0/100/14.3 bridge FCH LPC Bridge
• /0/101 bridge Renoir PCIe Dummy Host Bridge
• /0/102 bridge Renoir PCIe Dummy Host Bridge
• /0/103 bridge Renoir PCIe Dummy Host Bridge
• /0/104 bridge Renoir Device 24: Function 0
• /0/105 bridge Renoir Device 24: Function 1
• /0/106 bridge Renoir Device 24: Function 2
• /0/107 bridge Renoir Device 24: Function 3
• /0/108 bridge Renoir Device 24: Function 4
• /0/109 bridge Renoir Device 24: Function 5
• /0/10a bridge Renoir Device 24: Function 6
• /0/10b bridge Renoir Device 24: Function 7
• /0/1 system PnP device PNP0c02
• /0/2 system PnP device PNP0b00
• /0/3 generic PnP device FUJ7401
• /0/5 system PnP device PNP0c02
• /0/6 system PnP device PNP0c01
• /1 power CRB Battery 0