No because that would imply it is an action that can’t be undone or forgiven and Jesus says there is only one sin that can’t be forgiven, Sinning Against the Holy Spirit and this isn’t that. That sin is after seeing God revealed to you, you reject this shown truth and therefore claim sin completely. This can’t be forgiven because you literally saw and chose not to believe.
If you could “sell” your soul, this would be an unforgivable action since the soul wouldn’t be yours anymore, but the soul isn’t neccessarily even ours to “sell” if we could. So this is a moot point.
Simply, no you can’t sell your soul. But if you tried to that’s still grave sin - but it is forgivable in confession. However, you can seriously damage your soul and rupture the connection with God (mortal sin) by being part of satanic acts, such as black masses and such. But again, this is forgivable, though extremely grave sin.
Being possessed by the devil is not the same as selling your soul and the theological logic I use is the fact that only one sin can be forgiven and if this selling was possible, it by definition couldn’t be forgiven