There's ton of tutorials how to prep Eva before painting but I struggle to find info what to do after painting. I need to seal, let's say for example, sword hilt (it'll be touched a lot of course so I don't want the paint to be wiped off) to make acrylics secured and safe but still has this matt finish I'll be very grateful for any tips and product recommendation 🙏 Photo of my prop for attention

Matte Varnish meant for acrylic paintings. 1 or 2 good coats. Golden, Liquitex, Windsor & Newton and all brands I have used.
Thxx for recommendation, luckily these brands are easily accessible in my country
I like using Plasti-dip clear because it still allows some flexibility of the foam parts.
You can seal EVA with a heat gun/ hair dyer. Just don't over do it
Also when it's already painted with acrylics?
I used Modge-Podge on this EVA map case.
It has held up very nicely.
It's looks epic, isn't it sticky in touch after sealing it with glue?
Nope! It's smooth and dry after 24 hours.
Okk, thx for recommendation:3