Yes.
I have checked 3 sources and they all agree that the title “to the Hebrews” is a name that was traditionally ascribed to the letter and not part of what the original inspired writer wrote.
“This epistle is not a letter to the Hebrews, but a detailed explanation to everyone of the reasons behind Jesus’ life and passion”
“It’s title of ‘Hebrews’ is itself a misnomer, as the explanation in the book is plainly for everyone”
Another source states:
“The book of Hebrews doesn’t clearly identify its audience by name, city or region”
Another source states:
“This epistle’s title bears the traditional Greek title, ‘to the Hebrews’”
Here maybe this will help you understand.
In the past God spoke to
our forefathers through the prophets at many times and in various ways (Hebrews 1:1).
Hebrews 1:1 The fathers and prophets.
Hebrews 1:5-14 Extensive Old Testament quotes.
Hebrews 3:12-19 Israel’s wilderness wanderings and unbelief.Hebrews 5:1-10
Aaron, the high priest, and Melchizedek.
Hebrews 6:13-20 Abraham and the promise.
Hebrews 7:1-28 Melchizedek, Abraham, and the Levites.
Hebrews 8:7-13 Old and new covenants.
Hebrews 9:1-27 The tabernacle, sacrifices, and cleansings.
Plainly obvious