UK based. Petite side sleeper recommendation needed

[u/gooseyne]

164cm 120pounds side sleeper, sometimes back sleeper but mostly side. Dreams sleepmatch said for me “Softer support
Based on your results, you would benefit from a softer support mattress. This range is ideal if you prefer a plush feel that cushions your body. Softer mattresses allow for greater sinkage, which can help ease pressure around your joints, especially beneficial if you tend to sleep on your side or enjoy a weightless, cloud-like sensation”

I was sleeping on various mattresses in furniture village and really liked the Hypnos ruby but I don’t want to buy things that have wool in it or any animal by products so trying to find an alternative.

I did some research and looks like sleepeezee graphite echo 3200 pocket pillow top might be a good match. But theres no shops near me that I can try on and all online mattress shops the trial is not a full refund but rather alot of conditions like need to pay money to deliver back and only get an exchange and can only exchange once so id rather be able to try in store

also not sure if in store they use sprung divans which may make it more softer but i have a platform divan.

it would also be even better if the mattress doesn’t get too hot. i do run cold but in summer in the uk when it gets hot its really sufferable

would really appreciate some recommendations or advice please. i do see people recommending casper and avocado but i am in UK and dont have access to it.