In my experience, frozen embryo transfer (FET) cycles are not as successful as fresh. However, rates can vary from clinic to clinic; it’s possible that some teams may have frozen rates comparable to fresh rates.
There are some theoretical advantages to frozen cycles: for example, hormone levels with FET can be much more normal (and in turn, better for egg implantation) than with IVF. FET cycle protocols also require minimum of hormonal intervention. Sometimes we use no medications at all! So depending on your case, trying FET can be quite reasonable.
But as with any method, if you don’t get results after several tries, it may be time to switch tactics.