Can I stretch some leather sandals?

[Polkadotvest]

I bought some on Vinted which are great but a wee bit small. Annoying as I tried on a 3 in m and a and they were great but I'm skint and couldn't afford new ones. 😡
They are strappy gladiator ish / chunky things (pic attached ) and I think the straps are woven quite tightly. Maybe they'll stretch naturally but would be good to give them a hand!
Any ideas about if this is possible and how to do it or should I just resell ?! 😫

I’m currently stretching a pair. I wear thick socks with them and wear them round the house, you can also dunk them in water then put thick socks on and let them dry on your feet. You can also tug the leather and bend it to stretch it

Oh great idea thanks I'm worried they're not waterproof and would wreck if I soak 😬😬.

Buy some leather stretch spray and stick some shoe stretchers in (or your feet). EE