The gun doesn’t matter that much as long as it’s reliable. With that said, the Glock 26 already has a proven track record.
Do you have other compatible gear like spare parts, sights, mags, holsters? Do you have the cash to burn on a gun, holsters, sights, etc.?
The other consideration is do you dress around a gun or do you wear clothes that fit? What about in the summer? Fall and winter are easy.
Do you prefer to carry the same gun 90% of the time and have absolute confidence in it. Or, do you change what you carry based on the weather and your attire?
Are you going to carry behind your hip or appendix?
Lots of considerations.
I have a zillion mags, holsters, sights, etc. for Glock 19 and Glock 26. Once you find something that works, invest in learning how to maintain it. Friends of mine spend so much money on new guns all of the time and barely shoot them. I buy a case or two of ammo for the fraction of their hardware cost. Guess who the better shooter is?