Hi! I would suggest expressions like:
يتجول رفقة أصدقائه.
رافق أصدقائه إلى الخارج.
يتنزه رفقة أصدقائه.
The expression "يتسكع رفقة أصدقائه" may not have the meaning of "fooling around" exactly, but it generally means to go out without a purpose and may be committing small assults against neighbours. It is often used to describe drunk or homeless people... etc.