The short answer is no, it is not.
I have heard one or two proposals that it is, including from Langfocus, a usually excellent YouTube channel.
But no, English is actually a Germanic language which has borrowed many words from other languages.
Here are several reasons why English is Germanic at its core ...
1. Verb forms
English has weak verbs, just like German. Weak verbs keep their stem the same and add -t or -ed at the end.
to play - spielen
I play - ich spiele
I played - ich spielte
I have played - ich habe gespielt
English and German also have strong verbs. These have a vowel change in the stem, without -t or -ed at the end
to sing - singen
I sing - ich singe
I sang - ich sang
I have sung - ich habe gesungen
Mixed verbs have vowel change in the stem and -t or -ed ending
to think - denken
I think - ich denke
I thought - ich dachte
I have thought - ich habe gedacht
2. Word order of adjectives ...
Adjectives come before the noun
a fast car - ein schnelles Auto
a black dog - ein schwartzer Hund
3. Common everyday words are similar ...
man - Mann
hand - Hand
finger - Finger
foot - Fuss
house - Haus
hundred - Hundert
thousand - Tausand
I think that most linguists consider English to be a West Germanic language.
And they are 100% right