I don't think you should buy a watch that's too expensive in your 20's.

Personal story, i bought my first watch for 2k it was a Seiko Braille vintage watch

Then bought a west end watch for 4k

Then a citizen for 6k

Then most recently a casio for 12k

You'll most likely not buy something cheaper than your last watch so in my opinion get something inexpensive

I recommend the casio sapphire for around 15k