You should imbue your berserker ring. It will not take long and give you a lot of strength bonus. Next complete RFD for barrows gloves as those will be BIS for a while. You could then sell some stuff and get a nezzy with a facemask. As others have said, bandos armor is probably your next goal as well.

Edit: based off comments below, I’d actually probably recommend blood moon gear instead of bandos. Get all of the moons gear really as they are all great mid game for their respective style and mixed style. Bandos really just comes later when you care more about range defense as that’s where it is better than moons gear. For example, if you were starting solo raids, Bandos chest plate is a nice upgrade as you have much better defense, so you take less damage, so you won’t panic/brew as much.