Hi Mario
To do the above you will require tools.
To remove the cassette, a lockring tool and chainwip.
If your chain has a quicklink only pliers needed if not a chain breaker.
Chainrings looks like you only will require Allen Keys.
Good Luck
Chain Breaker
https://www.takealot.com/toopre-workshop-bicycle-cassette-wrench-chain-whip/PLID95868035chain whip
Lockring tool
The 112th edition of Liège–Bastogne–Liège takes place on Sunday, 26 April and marks the final race of the Ardennes Classics and the last Monument of the spring. With Pogačar, Evenepoel and Seixas set to go head-to-head, it promises a spectacular finale.
Going to be a nice battle
I depends what you want out of it, premium features for budget price.
Go for the Magene/Geoid. Same computers just different branded, does everything a Garmin does at a fraction. I used the Magene C706 although a lot more expensive but has all the bells and whistles
https://www.aliexpress.com/item/1005010724239111.html
So. . . . If you are looking at a very budget Smart watch...I am trying out the CMF Watch Pro 2 by Nothing. Pleasantly surprised that it works in all aspects. GPS works, HR works, Bluetooth calls etc etc. And for like R1k, I cannot complain.
https://intl.nothing.tech/products/cmf-watch-pro-2?Colour=Dark+Grey
Been using the these for a couple of months now and still good. Will buy again
https://bike-addict.co.za/collections/ryder/products/ryder-aero-gel-2-0-gloves
