Although 'too' is very often or mostly found at the end of a sentence, that is not the only place where it may be used: I too like bananas; she too was going through the menopause.
We usually put too in end position:
Gill’s having chicken. I’ll probably have chicken too.
She looks really tired and she must be really hungry too.
Too can occur immediately after the subject, if it refers directly to
the subject. It does not normally occur after a modal or auxiliary
verb. We sometimes write commas before and after too:
I too thought she looked unwell.
We, too, have been very pleased to receive the prize on her behalf.
Also, as well or too? (Cambridge)
Some sources advise a comma before and after a mid-sentence 'too', and before one at the end of a sentence, and others say that commas only be used in these situations:
When starting a sentence with 'too', in the sense of 'also', a construction many writers avoid.
To emphasize an abrupt change of thought: He didn’t know at first what hit him, but then, too, he hadn’t ever walked in a field strewn with garden rakes.
Commas with 'too'