Hi fan speeds with lots of noise

Hi all,
I unfortunately own a Medion Akoya E15302 laptop. It came, as almost all laptops with Windows 10 installed and on a different partition of the hard drive the installation files.
Because I use openSUSE I deleted everything by creating a new partition table to get the most free space available.
Now I notice that the fan kicks in very often, even with CPU temperatures around 40-42C. It doesn’t just increase the speed a bit, no it uses position hair dryer. Listening to music or watching a video that way is nearly impossible.
I contacted Medion support bu they answered and have done so several times: We can only give support on systems which are in the original configuration. Since Windows is gone from disk I don’t have an original configuration. What they are telling me is simply we don’t honor your warranty. This will be the last Medion I ever bought. Never again.

But now to the real problem: how to get the fan speed down? Below is the output of inxi -F:

inxi -F
System:    Host: localhost.localdomain Kernel: 5.10.12-1-default x86_64 bits: 64 Desktop: KDE Plasma 5.20.5 
           Distro: openSUSE Tumbleweed 20210203 
Machine:   Type: Laptop System: MEDION product: E15302 v: N/A serial: <superuser/root required> 
           Mobo: MEDION model: NS15AP serial: <superuser/root required> UEFI: American Megatrends 
           v: AP618_MED_V0.13.1_M00P1T0G0 date: 12/19/2019 
Battery:   ID-1: BAT0 charge: 12.6 Wh condition: 45.0/45.0 Wh (100%) 
CPU:       Topology: Quad Core model: AMD Ryzen 5 3500U with Radeon Vega Mobile Gfx bits: 64 type: MT MCP L2 cache: 2048 KiB 
           Speed: 2691 MHz min/max: 1400/2100 MHz Core speeds (MHz): 1: 1243 2: 1226 3: 1225 4: 1274 5: 1227 6: 1225 7: 1356 
           8: 1749 
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Picasso driver: amdgpu v: kernel 
           Display: x11 server: X.org 1.20.10 driver: amdgpu resolution: <xdpyinfo missing> 
           OpenGL: renderer: AMD Radeon Vega 8 Graphics (RAVEN DRM 3.40.0 5.10.12-1-default LLVM 11.0.1) v: 4.6 Mesa 20.3.3 
Audio:     Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel 
           Device-2: Advanced Micro Devices [AMD] Raven/Raven2/FireFlight/Renoir Audio Processor driver: N/A 
           Device-3: Advanced Micro Devices [AMD] Family 17h HD Audio driver: snd_hda_intel 
           Sound Server: ALSA v: k5.10.12-1-default 
Network:   Device-1: Intel Wireless 3165 driver: iwlwifi 
           IF: wlp1s0 state: up mac: 34:cf:f6:40:ff:0b 
           IF-ID-1: tun0 state: unknown speed: 10 Mbps duplex: full mac: N/A 
Drives:    Local Storage: total: 476.94 GiB used: 86.87 GiB (18.2%) 
           ID-1: /dev/sda model: S11-512G-PHISON-SSD-B27 size: 476.94 GiB 
Partition: ID-1: / size: 23.50 GiB used: 12.79 GiB (54.4%) fs: ext4 dev: /dev/sda2 
           ID-2: /home size: 428.59 GiB used: 74.07 GiB (17.3%) fs: ext4 dev: /dev/sda4 
Swap:      ID-1: swap-1 type: partition size: 16.00 GiB used: 0 KiB (0.0%) dev: /dev/sda3 
Sensors:   System Temperatures: cpu: 53.1 C mobo: N/A gpu: amdgpu temp: 53 C 
           Fan Speeds (RPM): N/A 
Info:      Processes: 289 Uptime: N/A Memory: 13.59 GiB used: 1.86 GiB (13.7%) Shell: bash inxi: 3.1.00

The BIOS has no way of controlling the temperature or fan speed. Can it be done from within the OS? If so, how?
The high speed also drains the battery quickly, I’m lucky to get 2 hours of battery usage and that’s with the screen brightness down as far as possible. I connect an external screen so I don’t use the built-in one.

Who can give me some advice how to do this?
Thank you.